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
Hard chancre is seen in – 
Select and explain. 
A. Chancroid, B. Syphilis, C. Tularemia, D. All
B: Syphilis
Answer: B: Syphilis 
Explanation: Lesion of primary syphilis  →     Chancre (Hard - chancre)
Lesion of H. Ducreyi        →  Chancroid (Soft - chancre)