This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Proteins and Amino Acids, Subject name: Biochemistry
Which of the following is not an aromatic amino acid? 
Select and explain. 
A. Phenylalanine, B. Tyrosine, C. TVyptophan, D. Valine
D: Valine
Answer: D: Valine 
Explanation: Ans: d (Valine) (Ref: Vasudevan, 4th ed, p. 321; 5th ed, p. 16,202; Harper, 23th ed, p. 28Aromatic amino acids are:Phenyl alanineTrypophanTyrosineHistidine