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: Microbiology
True about primary chancre -a) Multiple ulcersb) Painless solitary ulcerc) Most infective stated) Heals automatically in few months without treatmente) Penicillin is the drug of choice 
Select and explain. 
A. abc, B. bde, C. ace, D. bce
B: bde
Answer: B: bde 
Explanation: None