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: Medicine
A young man was on high protein diet. After 3 days he developed weakness. Blood investigation revealed hypoglycemia. Hypoglycemia is due to inhibition of which of the following enzymes 
Select and explain. 
A. Glucose 6 phosphatase, B. Glycogen phosphorylase, C. Phosphoglucomutase, D. PEP carboxylase
D: PEP carboxylase
Answer: D: PEP carboxylase 
Explanation: Answer- D. PEP carboxylase