This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nerve supply, Nerve Lesions, Subject name: Anatomy
All of the folowing are FALSE about Erb's paralysis EXCEPT? 
Select and explain. 
A. Supination of forearm, B. Injury to lower trunk of Brachial Plexus, C. Inability to initiate abduction, D. Decreased sensation on medial side of hand
C: Inability to initiate abduction
Answer: C: Inability to initiate abduction 
Explanation: Injury to the upper trunk of brachial plexus causes Erb's paralysis. Nerve roots involved = C5 - C6 Muscles paralysed - Biceps brachii Brachialis Deltoid Brachioradialis Supraspinatus Infraspinatus paly Supinator Deformity: k/a - policeman / poer / waiter's tip hand Arm hangs by the side, adducted & medially rotated Forearm extended & pronated Disability: loss of the fall movements: Abduction & lateral rotation of arm at shoulder Bicep with supinator jerk lost Sensory loss over small area of deltoid.