<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 16-year-old girl is brought to the clinic by her mother for amenorrhea. The patient has never had a menstrual cycle and is worried as all her friends have started to go through puberty. She has been otherwise healthy with an uncomplicated birth history. I told her not to worry since I also got my period late, her mother reported during the encounter. Physical examination demonstrates Tanner stage 2 breasts, genital, and pubic hair. Temperature is 98.7 F 37.1C, blood pressure is 156100mmHg, pulse is 92min, and respirations are 12min. What laboratory abnormalities would you expect to find in this patient?? A: Elevated levels of 17-hydroxyprogesterone, B: Elevated levels of androstenedione, C: Elevated levels of 17-hydroxypregnenolone, D: Low levels of adrenocorticotrophic hormone, E: Low levels of androstenedione,  <response>: This is a question about a 16-year-old girl with primary amenorrhea. Based on the history and physical exam findings, she likely has delayed puberty. The key finding is that she has not started menstruating yet despite being 16 years old. The question asks what laboratory abnormalities you would expect to find in this patient. Since she has delayed puberty, you would expect her sex hormone levels to be low or delayed in development compared to normal for her age. Choice A, elevated 17-hydroxyprogesterone, would indicate congenital adrenal hyperplasia, which is unlikely given her lack of virilization. Choice B, elevated androstenedione, would be unusual and point more towards a tumor. Choice C, elevated 17-hydroxypregnenolone, may be seen in congenital adrenal hyperplasia, which is unlikely here.Choice D, low ACTH, would be unusual and point towards a pituitary problem. Choice E, low androstenedione, would be expected in delayed puberty when sex hormone levels are low.E: Low levels of androstenedione 