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': 'Action of Lumbricals is \nSelect and explain. \nA. Flexion at Metacarpo - Phalangeal joint and flexion at Interphalangeal joint, B. Extension at Metacarpo - Phalangeal joint and extension at Interphalangeal joint, C. Flexion at Metacarpo - Phalangeal joint and extension at Interphalangeal joint, D. Extension at Metacarpo - Phalangeal joint and flexion at  Interphalangeal joint', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Action of Lumbricals is Flexion at Metacarpo - phalangeal joint and extension at Interphalangeal joint.', 'role': 'assistant'}]