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: Physiology
Which hormone does not have corresponding release hormone produced in pituitary? 
Select and explain. 
A. TSH, B. Prolactin, C. ACTH, D. FSH
B: Prolactin
Answer: B: Prolactin 
Explanation: None