This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Biochemistry
Von Geirke’s occurs due to deciency
of 
Select and explain. 
A. Liver Phosphoryias, B. Glucose-6-phosphatas, C. Muscle phosphoryiase, D. Debranching enzyme
B: Glucose-6-phosphatas
Answer: B: Glucose-6-phosphatas 
Explanation: o Glucose – 6- phosphatase is deficient in Von Gierke’s disease