This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pharmacology
Tamoxifen causes ? 
Select and explain. 
A. Osteoporosis, B. Endometrial hyperplasia, C. Ovarian cancer, D. Decreased triglyceride level
B: Endometrial hyperplasia
Answer: B: Endometrial hyperplasia 
Explanation: Ans. is 'b' i.e., Endometrial hyperplasia