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: Social & Preventive Medicine
Semi essential amino acids are 
Select and explain. 
A. Tryptophan, Tyrosine, B. Histidine, Arginine, C. Leucine, Lysine, D. Phenylalanine, Valine
B: Histidine, Arginine
Answer: B: Histidine, Arginine 
Explanation: None