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: Medicine
What is drug of choice for acute attack of migraine- 
Select and explain. 
A. Methysergide, B. Caffeine, C. Amitryptiline, D. Sumatriptan
D: Sumatriptan
Answer: D: Sumatriptan 
Explanation: None