Q4

[syousif3]

Can you please help me. I'm having such a hard time why the answer is B instead of A

This is how I diagrammed it:

Exp:J/K/F L
In: m t

Geo: I'm not sure if I an put m t here as well or maybe just one of them
Radio: L J/K

[syousif3]

Oh never mind I think I got it. A is not right because F cannot be selected anyways and the question is asking could be but doesnt have to. so it is B) because J deosnt need to be selected since there is K