A 19-year-old fell from a cliff when he was hiking in the mountains. He broke his fall by grasping a tree branch, but he suffered injury to the C8-T1 spinal nerve roots. Sensory tests would thereafter confirm the nature of his neurologic injury by the sensory loss in the part of the limb supplied by which of the following?
Lower lateral brachial cutaneous nerve Musculocutaneous nerve Intercostobrachial nerve Medial antebrachial cutaneous nerve