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: Pyridoxal phosphate is a prosthetic group of enzymes involved in reactions of: 
 Options:  <1> Acetylation <2> Desulfation. <3> Methylation <4> Reduction. <5> Transamination.
