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
Glucose may be synthesised from : 
Select and explain. 
A. Glycerol, B. Adenine, C. Guanine, D. Palmitic acid
A: Glycerol
Answer: A: Glycerol 
Explanation: A i.e. Glycerol