This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endocrinology, Subject name: Physiology
Males and females show difference in the age of onset of pubey. The difference in the age of onset of pubey amongst males may be explained by 
Select and explain. 
A. Increased Activin - A levels, B. Decreased Follistatin levels, C. Increased Inhibin levels, D. Easily releasable FSH pool
C: Increased Inhibin levels
Answer: C: Increased Inhibin levels 
Explanation: One of several proteins that paicipate in differentiation and growth. Two glycoproteins, inhibin A and inhibin B, are secreted by Seoli cells in the testis and granulosa cells in the ovary, inhibiting FSH secretion by direct action on the pituitary.Ref: Ganong&;s review of medical physiology; 24th edition; page no:-427