Problem: A 40-year-old woman presents to the hospital with right lower abdominal pain, fever, nausea, and vomiting. Physical examination demonstrates focal tenderness in the right lower quadrant and a positive Rovsing sign. She is 22 weeks pregnant. What is the most appropriate initial imaging modality in the evaluation of this patient? Looking for Assignment Help? A. Computed tomography (CT) of abdomen and pelvis B. Magnetic resonance imaging (MRI) of the abdomen C. Abdominal ultrasound D. Pelvic ultrasound