A patient had abdominal surgery yesterday when auscultating his abdomen, you would expect to hear:

A. High-pitched, tinkling sounds: These may indicate bowel obstruction, not expected immediately after surgery. B. Normal bowel sounds: Normal bowel sounds usually return gradually after surgery, but are unlikely within the first 24 hours. C. Hypoactive bowel sounds: It is common to hear hypoactive or diminished bowel sounds in the first 24-48 hours after abdominal surgery due to postoperative ileus. D. Hyperactive bowel sounds: These suggest increased peristalsis and are not typical immediately after surgery.