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: Gynaecology & Obstetrics
Aminoacid sequence of hcG is 80% similar to 
Select and explain. 
A. FSH, B. LH, C. GnRH, D. None
B: LH
Answer: B: LH 
Explanation: Amino acid sequence of LH and hcG - β subunits demonstrates 80% similarity.