A 24-year-old non-pregnant woman has dysuria and frequency without vaginal discharge. No antibiotic allergies. What is first-line empirical treatment?ATrimethoprim 200 mg BD for 3 daysBNitrofurantoin 100 mg modified-release BD for 3 daysCCiprofloxacin 500 mg BD for 3 daysDCo-amoxiclav 625 mg TDS for 5 daysENo antibiotics; send urine onlyCheck my answer