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: Surgery
[{'content': '30 years of women comes with dysphagia for both solid & liquids. Barium swallow shows Parrot beak appearance. On esophageal manometry, increased LES pressure. Management includes: \nSelect and explain. \nA. Nitrates, B. Ca channel blockers, C. Botulinum toxin, D. All', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans. is all', 'role': 'assistant'}]