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: Dental
DOC in chancroid is – 
Select and explain. 
A. Tetracycline, B. Doxycycline, C. Erythromycin, D. Streptomycin
C: Erythromycin
Answer: C: Erythromycin 
Explanation: None