This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nervous system, Subject name: Physiology
[{'content': 'How would a drug that competes with Ach for receptors at the motor end plate effect skeletal muscle? It would \nSelect and explain. \nA. Produce uncontrolled muscle spasma, B. Cause the muscles to contract and be unable to relax, C. Cause muscles to relax and be unable to contract, D. Make the muscles more excitable', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Dragcompetes with acetylcholine at the motor end plate causes muscle relaxation Ref: guyton and hall textbook of medical physiology 12 edition page number:65,66,67', 'role': 'assistant'}]