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
Ovulation is associated with sudden rise in: 
Select and explain. 
A. Prolactin, B. Testosterone, C. LH, D. Oxytocin
C: LH
Answer: C: LH 
Explanation: C i.e. LH