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: Medicine
A primary syphilitic lesion of the male genitalia characterized by: 
Select and explain. 
A. soft, ragged ulcer, B. punched out painless ulcer with indurated edges, C. raised, flat, greyish, moist confluent lesions, D. necrotic rubbery lesion
B: punched out painless ulcer with indurated edges
Answer: B: punched out painless ulcer with indurated edges 
Explanation: None