The answer key for q16 "If S is performed fourth, which one of the following could be an accurate list of the compositions performed first, second, and third, respectfully?" says that C is the correct answer (O,P,R). I answered D (O,P,T) which actually works when S is performed fourth:
O P T R S H F L
Here, TR are together, R is at least two compositions before F, P is before S, O is at least one composition before S, O is in the first spot, and L is in the last spot. With that said, I am confused why my answer is wrong, according to the answer key.