You are answering a USMLE-style medical question. Question: A 36-year-old woman, gravida 2, para 2, comes to the emergency department because of sudden-onset, severe right flank pain. She was in her aerobics class when the pain started but denies any trauma to the region. She has a history of recurrent ovarian cysts. Menses occur regularly at 28-day intervals. Her temperature is 37.1°C (99.3°F). Abdominal examination shows tenderness in the right lower quadrant with guarding. Pelvic ultrasound shows a large simple cyst on the right ovary. Right ovarian artery flow is detectable on Doppler, but there is no flow detected in the right ovarian vein. Which of the following ligaments is most likely to have been involved? Options: A) Broad ligament B) Ovarian ligament C) Cardinal ligament D) Infundibulopelvic ligament Reply with ONLY the letter of the correct answer (A, B, C, or D). No explanation.