This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Upper limb, Subject name: Anatomy
[{'content': 'Which of the following nerve carries fibers from all the roots of brachial plexus? \nSelect and explain. \nA. Axillary, B. Ulnar, C. Median, D. Musculocutaneous', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Root values of the nerves are as follows: Median nerve:C5,C6,C7,C8,T1 Axillary nerve: C5, C6 Musculocutaneous nerve: C5, C7. Ulnar nerve: C7, C8, T1. The median nerve originates from the lateral and medial cords of the brachial plexus and has contributions from ventral roots of C5-C7{Lateral cord} and C8 and T1 {medial cord}. REF: BD Chaurasia 7th edition page no:57.', 'role': 'assistant'}]