A 32-year-old MSM with a documented chlamydia infection 4 months ago asks about STI prevention. He continues to have condomless sex with new partners. What evidence-based biomedical prevention can be offered?ADaily doxycycline 100 mg for PrEP indefinitelyBDoxycycline 200 mg within 72 hours after sex, not more than once per 24 hoursCCeftriaxone 500 mg IM every month as prophylaxisDAzithromycin 1 g after each sex actENo antibiotic prophylaxis is recommended for any populationCheck my answer