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: Pathology
A patient has asymptomatic painless burrowing ulcer in the palate. He might be suffering from 
Select and explain. 
A. Syphilis, B. Tuberculosis, C. Histoplasmosis, D. Actinomycosis
A: Syphilis
Answer: A: Syphilis 
Explanation: None