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: Gynaecology & Obstetrics
Antibiotics recommended for treatment of bacterial vaginosis according to CDC include all except 
Select and explain. 
A. Clindamycin, B. Erythromycin, C. Metronidazole, D. Tinidazole
B: Erythromycin
Answer: B: Erythromycin 
Explanation: Erythromycin is not included in regimens for treatment of bacterial vaginosis.