A 38-year-old MSM with a recent rectal chlamydia asks about doxycycline post-exposure prophylaxis (doxy-PEP). Appropriate counseling includes which of the following?AConsider doxycycline 200 mg within 72 hours of sex (max once/24 h) with STI testing every 3-6 monthsBDoxy-PEP is indicated for all sexually active adultsCDose is doxycycline 100 mg once after sexDDaily doxycycline is recommended indefinitelyENo need for follow-up testing once on doxy-PEPCheck my answer