This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Biochemistry
Energy source used by brain in later days of Starvation is 
Select and explain. 
A. Glucose, B. Ketone bodies, C. Glycogen, D. Fatty acids
B: Ketone bodies
Answer: B: Ketone bodies 
Explanation: B i.e. Ketone bodies REF: Lippincott book of biochemistry 6th ed.