This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endocrinology and breast, Subject name: Surgery
[{'content': 'Drug of Choice for Severe Mastitis \nSelect and explain. \nA. Cefphalosporins, B. Erythromycin, C. Augmentin, D. Cloxacillin', 'role': 'user'}, {'content': 'Answer: D \nExplanation: * MC organism causing Mastitis- Staphylococcus aureus * Drug of Choice is- Cloxacillin Ref:- Surgery Sixer 3rd Edition; Pg num:- 268', 'role': 'assistant'}]