A 28-year-old woman from Delhi presents to the gynaecology clinic seeking contraception. She has a history of migraine with aura, which is well-controlled on topiramate. Her menarche was at age 13, and she has regular 28-day cycles. She is a non-smoker and has no family history of thrombosis. On examination, BP is 118/76 mmHg, BMI 22 kg/m². She is counselled about various contraceptive options. Which of the following is the most appropriate choice for this patient?