This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Pituitary-Hypothalmic System and Thyroid, Subject name: Pharmacology
Which of the following drugs DO NOT cause hyper- prolactinemia? 
Select and explain. 
A. Bromocriptine, B. Haloperidol, C. Reserpine, D. Chlorpromazine
A: Bromocriptine
Answer: A: Bromocriptine 
Explanation: Hyperprolactinemia is caused by D2 blockers. All the drugs listed are D2 blockers except Bromocriptine which is a D2 receptor agonist. It is used in the treatment of Hyperprolactinemia.