Whether she has torn her anterior cruciate ligament or her medial meniscus

52 yr old 70-kg woman present to ER with swollen right knee after falling down at home. PMH reveals diabetic nephropathy and stable creat. of 2.5 mg/dL. Her orthopedic surgeon orders MRI with gadolinium to assess whether she has torn her anterior cruciate ligament or her medial meniscus.

Which of the following is most appropriate next step?
A. Replace MRI with CT scan.
B. Perform a preoperative clearance assessment in anticipation of surgery.
C. Replace MRI with bone scan.
D. Perform MRI without gadolinium.
E. Add knee radiographs to the existing MRI order.