A nurse in a school-based health center is educating a group of adolescents about prevention and treatment of sexually transmitted infections (STIs). Which of the following information should the nurse include in the teaching?

A. Abstinence is the only guaranteed way to prevent STIs. B. Early detection and treatment of STIs can prevent serious health problems, including infertility, pelvic inflammatory disease, and chronic pain. C. While having one faithful partner who is also only with you reduces the risk, it doesn't eliminate it completely. New partners can introduce STIs. D. Adolescents are at increased risk for STIs due to various factors, including hormonal changes, experimentation, and lack of consistent condom use.