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: Surgery
A 16 year old boy developed weakness of flexion at elbow and loss of sensation over the lateral aspect of forearm. On examination he has an anterior dislocation of the shoulder.Which nerve is involved? 
Select and explain. 
A. Radial nerve, B. Musculocutaneous nerve, C. Axillary nerve, D. Ulnar nerve
B: Musculocutaneous nerve
Answer: B: Musculocutaneous nerve 
Explanation: The symptoms in this scenario suggest an injury to the musculocutaneous nerve. Ref: Conservative Management of Spos Injuries By Thomas E. Hyde, Marianne S. Gengenbach, 2007, Page 516