<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 69-year-old woman comes to the clinic for an annual well exam. She reports no significant changes to her health except for an arm fracture 3 weeks ago while she was lifting some heavy bags. Her diabetes is well controlled with metformin. She reports some vaginal dryness that she manages with adequate lubrication. She denies any weight changes, fevers, chills, palpitations, nauseavomiting, incontinence, or bowel changes. A dual-energy X-ray absorptiometry DEXA scan was done and demonstrated a T-score of -2.7. She was subsequently prescribed a selective estrogen receptor modulator, in addition to vitamin and weight-bearing exercises, for the management of her symptoms. What is the mechanism of action of the prescribed medication?? A: Estrogen agonist in bone and breast, B: Estrogen antagonist in breast and agonist in bone, C: Estrogen antagonist in cervix and agonist in bone, D: Partial estrogen agonist in bone and antagonist in cervix, E: Partial estrogen agonist in endometrium and bone,  <response>: This is a clinical vignette about a 69-year-old woman who comes in for an annual wellness visit. She has well-controlled diabetes on metformin and some vaginal dryness that she manages with lubrication. She recently had an arm fracture. A DEXA scan showed osteoporosis T-score -2.7 so she was prescribed a SERM in addition to vitaminexercise for osteoporosis management. The question asks about the mechanism of action of the prescribed SERM medication.B: Estrogen antagonist in breast and agonist in bone 