You are answering a USMLE-style medical question. Question: A 69-year-old man presents to his primary care physician with hip and back pain. The patient states that this weekend he had a barbecue. When he was lifting a heavy object he suddenly felt pain in his lower back. He describes the pain as in his buttocks but states that at times it travels down his leg. The patient states that it feels, "electrical." The patient has a past medical history of obesity, diabetes, depression, anxiety, diverticulosis, constipation, and a surgical repair of his anterior cruciate ligament. His current medications include metformin, insulin, lisinopril, fluoxetine, and sodium docusate. Which of the following is most likely to help confirm the diagnosis? Options: A) Flexion, abduction, and external rotation of the thigh B) Straight leg raise C) Internal rotation of the extended hip D) Radiography Reply with ONLY the letter of the correct answer (A, B, C, or D). No explanation.