{"answers": "A", "options": ["f : the service charges $ 5 if the food costs $ 50 .", "f : the service charges $ 5 if the food costs $ 100 . so , it may be charge $ 2.5 when it costs 50 % .", "f : the service charges $ 15 if the food costs $ 50 .", "f : the service charges the same as the food cost , which is $ 50 as well ."], "article": "f : i wonder if there is a service charge for our meal ? m : i think so . the menu says the service charge is 10 % . question , how much is the service charge if the food costs $ 50 ?", "id": "train_5026"}