Definition: In this task, you are given a multiple-choice question about healthcare. Answer the question based on your information and classify your answers into '1', '2', '3', and '4'.
Input: Question: Which coenzyme is involved in the synthesis of nitric oxide (NO)? 
 Options:  <1> NADH <2> NADPH. <3> FAD. <4> CoA. <5> Thiamine.
