Tamia presents with an unspecified work-related injury to her right upper extremity. Upon examination, the patient demonstrates weakness in wrist flexion and loss of forearm pronation. The patient also exhibits a diminished brachial reflex and a positive Froment's sign. Which nerve is LEAST likely to be affected?

A. Median nerve

B. Ulnar nerve

C. Musculocutaneous nerve

D. Posterior interosseous nerve

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