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
[{'content': 'Which of the following is not supplied by C8 T1 - \nSelect and explain. \nA. Abductor pollicis brevis, B. Extensor indicis, C. Palmar interossei, D. 3rd & 4th lumbricals', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Small muscles of hand include- Thenar, Hypothenar, interossei and lumbricals. They are supplied by C8-T1. Extensor indicis is supplied by C7, C8', 'role': 'assistant'}]