This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endocrinology, Subject name: Biochemistry
Binds to the receptors on Leydig cells. 
Select and explain. 
A. LH, B. PRL, C. TSH, D. GH
A: LH
Answer: A: LH 
Explanation: LH binds to the receptors on Leydig cells and stimulates the release of testosterone. PRL, TSH, GH, and FSH do not bind to Leydig cells.