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
Treatment recommended for secondary syphilis is 
Select and explain. 
A. Benzathine penicillin G 2.4 mIU i.m weekly, 3 doses, B. Benzathine penicillin G 2.4 mIU i.m single dose, C. Benzathine penicillin G 2.4 mIU i.m twice weekly, 4 doses, D. Benzathine penicillin G 2.4 mIU i.m twice daily for 2 weeks.
B: Benzathine penicillin G 2.4 mIU i.m single dose
Answer: B: Benzathine penicillin G 2.4 mIU i.m single dose 
Explanation: None