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 one of the following is semiessential amino acid for humans? 
Select and explain. 
A. Valine, B. Arginine, C. Lysine, D. Tyrosine
B: Arginine
Answer: B: Arginine 
Explanation: Partially essential or Semiessential: Histidine and Arginine are semi-indispensable amino acids.
Reference: Vasudevan 7th  ed, pg 27