This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endocrine System, Subject name: Physiology
Which of the following increases secretion of GH? 
Select and explain. 
A. Senescence, B. Insulin-like growth factor-1 (IGF-1), C. Somatostatin, D. Hypoglycemia
D: Hypoglycemia
Answer: D: Hypoglycemia 
Explanation: Hypoglycemia is a potent stimulus for GH. GH decreases with aging and in response to the hypothalamic inhibitory hormone somatostatin. GH secretion would decrease in response to both exogenous GH administration and IGF-1 as a result of negative feedback inhibition