A 21-year-old sexually active woman presents to a GP clinic with a positive nucleic acid amplification test for Chlamydia trachomatis following screening. She is asymptomatic and not pregnant. What is the recommended first-line treatment?AAzithromycin 1 g orally as a single doseBCeftriaxone 500 mg IM as a single doseCMetronidazole 2 g orally as a single doseDDoxycycline 100 mg orally, twice daily for 7 daysEAmoxicillin 500 mg orally, three times daily for 7 daysCheck my answer