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 of the following anterior pituitary hormones is primarily under inhibitory control of hypothalamus. 
Select and explain. 
A. TSH, B. GRH, C. Somatostatin, D. Prolactin
D: Prolactin
Answer: D: Prolactin 
Explanation: None