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: Orthopaedics
A 19-year-old boy fell from the motet- bike on his shoulder. The doctor diagnosed him a case of Erb's paralysis. The following signs and symptoms will be observed except- 
Select and explain. 
A. Loss of abduction at shoulder joint, B. Loss of lateral rotation, C. Loss of pronation at radioulnar joint, D. Loss of flexion at elbow joint.
C: Loss of pronation at radioulnar joint
Answer: C: Loss of pronation at radioulnar joint 
Explanation: Movements lost in Erb's paralysis : -


Abduction and lateral rotation of shoulder.
Flexion and supination of the forearm.
Biceps and supinator jerks are lost
Sensations are lost over a small area over the lower part of deltoid.