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: Medicine
TSH beta subunit is related to 
Select and explain. 
A. LH, B. FSH, C. ACTH, D. None of the above
D: None of the above
Answer: D: None of the above 
Explanation: TSH alpha subunit is related to LH and FSH, while beta subunit is very specific.