This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Female Reproductive System, Subject name: Physiology
Pubey does NOT occur before the age of 8 years because: 
Select and explain. 
A. The hypothalamus does not secrete GnRH in a pulsatile manner, B. Inadequate synthesis of gonadotropins by the pituitary, C. Gonads are unresponsive to gonadotropin, D. Positive feedback action of gonadal steroids on pituitary
A: The hypothalamus does not secrete GnRH in a pulsatile manner
Answer: A: The hypothalamus does not secrete GnRH in a pulsatile manner 
Explanation: Pubey and regulation of its onset During childhood the hypothalamus does not secrete significant amount of GnRH because during childhood, the slightest secretion of any sex steroid hormones exes a strong inhibitory effect on hypothalamic secretion of GnRH. But at the time of pubey, the secretion of hypothalamic GnRH breaks through the childhood inhibition and adult sexual life begins.