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: Pharmacology
Which of the following drug is a SERM is useful for treatment of osteoporosis? 
Select and explain. 
A. Raloxifene, B. Bisphosphonate, C. Strontium, D. Estradiol
A: Raloxifene
Answer: A: Raloxifene 
Explanation: Raloxifen has agonistic action on estrogen receptors on bone Raloxifene is a first line drug for prevention and treatment of osteoporosis in postmenopausal females. It prevent bone loss, increases bone mineral density by 0.9 percent. (REF.Essential of medical pharmacology K D TRIPATHI 6 Edition, Page No - 305)