This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endocrinology metabolism, Subject name: Physiology
LH is secreted by - 
Select and explain. 
A. Ovary, B. Pituitary, C. Corpus luteum, D. Hypothalamus
B: Pituitary
Answer: B: Pituitary 
Explanation: Ans. is 'b' i.e., Pituitary