This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Sexually Transmitted Infections, Subject name: Dental
Following condition is caused by: 
Select and explain. 
A. Treponema, B. HSV 2, C. Small Pox virus, D. Syphilis
B: HSV 2
Answer: B: HSV 2 
Explanation: Genital herpes - Infection of the genitals caused by HSV. Either have no or mild symptoms. Blisters break open to form painful ulcers. Flu-like symptoms, such as fever, aching, or swollen lymph nodes. Onset is within 4 days after exposure with symptoms lasting up to 4 weeks. Antiviral medications, such as acyclovir, valacyclovir, may prevent outbreaks or shoen outbreaks if they occur.