Answer the following question given this paragraph: 

Genital herpes is a common STI caused by a herpes virus. The virus causes painful blisters on the penis or near the vaginal opening. The blisters generally go away on their own, but they may return repeatedly throughout life. There is no cure for genital herpes, but medicines can help prevent or shorten outbreaks.


Q: What type of sti is characterized by blisters?

 Choices:

- syphilis

- gonorrhea

- chlamydia

- genital herpes

A:
genital herpes
