After 2 years from last post, I thought it's okay to refresh it a bit

Here is the core:
Knowledge of the best treatment for emergency conditions can be gained only if consent to experimental practices is sometimes bypassed in medical emergencies. ==> Some restricted nonconsensual medical research should be allowed.
Regarding the core, and this tends to happen more often than I wish to, I get confused to where I should draw the line between "Background Information" and "Premise." While recognizing premise indicators and such help me see which part is most likely to be the premise, in this question for example, since a patient's right is mentioned in the "Background Information" and it is also mentioned in the right Answer Choice, I can't help but thinking maybe I should have included that information into premise, too.
As I understand that the core is just to help us see the relationship and the gap, we don't need to include all the details, it's pretty tricky to draw that line of what should NOT be included.
At any rate, getting into assumption of the passage, Ethicist assumes that gaining knowledge of the best treatment for emergency condition sometimes outweigh other issues that could be raised when bypassing the consent. Answer Choice E) states "patient's right" as one of the other issues, thereby making it a necessary assumption. Negation of this would destroy the argument.
A) What is best for the patients is not what we are concerned. We are concerned about “gaining the knowledge of the best treatment for emergency conditions.” So, this is out of scope.
B) Tempting. B) and E) were the last contenders I had to fight for. My reasoning for eliminating this was that
we are concerned about consent or not, not knowing or not. Even if they know that experimental treatment is being done, they could still consent to it. Bypassing the consent doesn’t necessarily mean not informing it. Even if they don’t consent it, in need of gaining best knowledge of emergency situation, they could pursue the experiment.
C) Aside from Reversing necessary condition(nonconsensual medical research should be allowed) for sufficient condition, another issue for this answer choice is that
benefiting the patient, although sounds appropriate, is not stated as a focus. So, this is also not necessary, or out of scope.
D) We are not dealing with the specific case where “best treatment option is unknown.” Out of scope.
E) Incorporating the patient's right from background information, putting this answer choice in between premise and conclusion provides acceptable flow. Of course, negation of this destroys the argument:
The right of patients to informed consent is outweighed in NONE of the medical emergencies by the possible benefits of research conducted without their consent.