{"answers": "D", "options": ["m : they were two brothers who ran the first mcdonald 's . they put no seats only to reduce the cost .", "m : they were two brothers who ran the first mcdonald 's . they put no seats only to make people eat quickly .", "m : they were two brothers who ran the first mcdonald 's . they put no seats not only to avoid washing dishes , but also to make people eat quickly .", "m : they were two brothers who ran the first mcdonald 's . they put no seats only to avoid washing dishes ."], "article": "m : do you know the first mcdonald 's restaurant had no seats for customers to sit on ? f : in that case , people had to stand eating , did n't they ? m : no , most people bought the food and took it away . and that 's the way mac and dick thought of to avoid washing the dishes . f : that 's a good idea , but who are mac and dick ?", "id": "train_3923"}