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: Von Gierke's disease is an enzyme deficit: 
 Options:  <1> Muscle glycogen phosphorylase. <2> Branching enzyme. <3> Hepatic glycogen phosphorylase. <4> Glucose 6-phosphatase. <5> Glycogen synthase.
