<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 9-year-old girl is brought to the physician because her parents are concerned about their daughters physical changes. She recently started wearing a bra and uses a facial scrub for oily skin. The parents have also noticed increasing body odor. The patient has a history of migraine headaches controlled with propranolol. She is at the 55th percentile for height and 60th percentile for weight. Examination shows separation of areola and breast contours; the nipple and areola form a secondary mound. Coarse dark axillary hair and sparse pubic hair are present. Which of the following is the most likely cause of these findings?? A: Tumor of the pineal gland, B: Hamartoma of the hypothalamus, C: Physiological development, D: Mosaic G-protein mutation, E: Functioning follicular ovarian cyst,  <response>: This is a question about precocious puberty in a 9-year-old girl. The key findings in the stem are early breast development, body odor, oily skin, and pubicaxillary hair growth. These are all signs of pubertal changes. The most likely cause in an otherwise healthy child is normal physiological development, though pathologic causes like tumors should be ruled out.C: Physiological development 