Which of the following is acceptable antimicrobial therapy for gonorrhea?
(A) Doxycycline $100 \mathrm{mg}$ by mouth twice a day for 14 days.
(B) Benzathine penicillin G 6.2 million units intramuscularly.
(C) Azithromycin $1 \mathrm{~g}$ by mouth.
(D) Ceftriaxone $125 \mathrm{mg}$ intramuscularly.