This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Breast Cancer - Treatments, Subject name: Surgery
Which of the following drugs is used in management of breast cancer if it is estrogen receptor positive - 
Select and explain. 
A. Bevacizumab, B. Tamoxifen, C. Cyclophosphamide, D. Adalimumab
B: Tamoxifen
Answer: B: Tamoxifen 
Explanation: Ans. is 'b' i.e., Tamoxifen Drugs commonly used in hormone (estrogen) receptor positive breast cancero SERMs Tamoxifen, tromifeneo SERDsFulvestranto Aromatase inhibitors Letrozole, anastrazole, exemestone.