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
False about syphilis is : 
Select and explain. 
A. Incubation period is 9-90 days, B. Secondary syphilis is due to hematological dissemination, C. Syphilitic ulcers(Chancre) are extremely painful, D. "General paresis of Insane" is due to CNS involvement in tertiary syphilis.
C: Syphilitic ulcers(Chancre) are extremely painful
Answer: C: Syphilitic ulcers(Chancre) are extremely painful 
Explanation: Syphilitic ulcers(Chancre) are usually single in number, butter like, hard in consistency and typically painless.