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
Substance for gluconeogenesis is 
Select and explain. 
A. Glycogen, B. Acetyl CoA, C. Glycerol, D. Leucine
C: Glycerol
Answer: C: Glycerol 
Explanation: None