This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Classification and metabolism of amino acids, Subject name: Biochemistry
All are aromatic amino acid except 
Select and explain. 
A. Phenyl alanine, B. Tyrosine, C. Leucine, D. Histidine
C: Leucine
Answer: C: Leucine 
Explanation: Branched chain Amino Acids are Valine Leucine Isoleucine All branched chain amino acids are essential Aromatic Amino Acids are Phenylalanine - Essential Tyrosine - Non-essential Tryptophan - Essential Histidine - Semi-essential