This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Anatomy
Musculocutaneous nerve is injured at the lateral cord of brachial plexus, positive clinical findings would be: 
Select and explain. 
A. Loss of flexion at shoulder, B. Sensory loss on the radial side of the forearm, C. Loss of extension of forearm, D. Loss of extension of the wrist
B: Sensory loss on the radial side of the forearm
Answer: B: Sensory loss on the radial side of the forearm 
Explanation: B i.e. Sensory loss on the radial side of forearm