This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Pituitary, Subject name: Physiology
Inhibition of prolactin is caused by: (Repeat) 
Select and explain. 
A. Dopamine, B. Dobutamine, C. TRH, D. AT-II
A: Dopamine
Answer: A: Dopamine 
Explanation: Ans: A (Dopamine) Ref: Pal GK, Pituitary Gland: The Anterior Pituitary. In: Textbook of Medical Physiology, Abuja Publishing House, 2007: 44:332Explanation:Regulation of Prolactin SecretionProlaction Increased by:PRFSleep, stress, breast feedingAlso released by TRH and hormones in the glucagon family (secretin, glucagon, VIP and gastric inhibitory polypeptide )AT-IIOxytocinDopamine antagonist (phenothiazine)Adrenergic blockersSerotonin agonistsProlactin Decreased by:DopamineSomatostatinProlactinGABA