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
[{'content': 'Hand foot mouth disease is characterized by   a) Cause miniepidemic in school  b) I.P. -3 - 10 Days  c)  Transmitted by virus  d) C/F similar test seen in cows \nSelect and explain. \nA. ac, B. ad, C. bd, D. cd', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]