A 30-year-old pregnant woman at 10 weeks’ gestation presents with dysuria and frequency but no systemic symptoms. Her urine dipstick is positive for nitrites and leukocytes. What is the most appropriate first-line antibiotic?ATrimethoprim for 3 daysBNitrofurantoin for 7 days (avoiding near term)CCiprofloxacin for 7 daysDDoxycycline for 3 daysENo antibiotics; reassure that mild UTIs in pregnancy are self-limitingCheck my answer