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
Amino acid with a basic side chain: 
Select and explain. 
A. Methionine, B. Leucine, C. Aspartic acid, D. Histidine
D: Histidine
Answer: D: Histidine 
Explanation: Amino acids with basic side chain: Histidine, Lysine, Arginine.
Amino acids with acidic side chain: Aspartic acid, Glutamic acid.
Non charged polar amino acids: Cysteine, Asparagine, Serine, Threonine, Glutamine, Tyrosine (CAST GaTe)