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
Which of the following glucogenic amino acid enters the citric acid cycle at succinyl CoA 
Select and explain. 
A. Phenylalanine, B. Tyrosine, C. Isoleucine, D. Tryptophan
C: Isoleucine
Answer: C: Isoleucine 
Explanation: Ans. is 'c' i.e., isoleucine