A 22-year-old man presents with urethral discharge and dysuria. NAAT from a first void urine sample is positive for Chlamydia trachomatis and negative for gonorrhoea. He has no allergies. What is the most appropriate first-line treatment?AAzithromycin 1 g orally as a single doseBDoxycycline 100 mg orally twice daily for 7 daysCCiprofloxacin 500 mg orally twice daily for 3 daysDNo treatment if symptoms resolve spontaneouslyETopical antiseptic cream onlyCheck my answer