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
Most basic amino acid among the following is: 
Select and explain. 
A. Alanine, B. Arginine, C. Histidine, D. Lysine
B: Arginine
Answer: B: Arginine 
Explanation: Acidic Amino Acid

Aspartic Acid (Aspartate)
Glutamic Acid (Glutamate)

Basic Amino Acid

Arginine (Most Basic Amino acid)
Lysine