2 20. A 23-year-old man is brought to the emergency department after he was struck in the left arm by a besebal bat. Examination of the am stud the humerus with possible nerve damage. An x-ray confirms the fracture. Which of the following deficis will confirm the nerve damag OA) Inability to extend the hand at the wrist joint B) Inability to oppose the thumb OC) Numbness over the medial side of the forearm OD) Weakness in abducting the arm OE) Weakness in pronating the forearm

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