In Terms of Symptoms, What Differentiates Primary Syphilis from a Herpes

In terms of symptoms, what differentiates primary syphilis from a herpes infection?

A) The sores seen in a syphilis infection are painful, while those seen in a herpes infection are painless.
B) Syphilis produces a distinct vaginal or penile discharge that is cloudy and foul smelling, but herpes does not produce any vaginal or penile discharge.
C) Syphilis produces a hard, painless sore, while herpes lesions are clusters of blisters that are extremely painful.
D) Syphilis can be contracted through sexual contact or contact with towels or other objects, but herpes can only be contracted through penile-vaginal contact.