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
Use of tamoxifen in carcinoma of breast patients does not lead to the following side effects : 
Select and explain. 
A. Thromboembolic events, B. Endometrial carcinoma, C. Cataract, D. Cancer in opposite breast
D: Cancer in opposite breast
Answer: D: Cancer in opposite breast 
Explanation: None