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: Indicate which of the following deficits leads to a porphyria: 
 Options:  <1> Phenylalanine hydroxylase. <2> 21 α-hydroxylase. <3> Ferrochelatase <4> Glucokinase. <5> Tyrosine hydroxylase.
