{"answers": "A", "options": ["f : haha , it sounds good that you offer a one-year guarantee for the new battery .", "f : you mean i can get a battery for free if i pay $ 10 for this battery . that 's nice .", "f : since you offer a one-year guarantee for the battery , i 'll change one for my phone .", "f : wow , you provide an additional free cleaning service if i change the battery ?"], "article": "f : excuse me , my watch stopped running and i am not sure what 's wrong with it . m : well , let me look at it . it seems that it just needs a new battery . f : oh , really ? i got some water on it last week and i was afraid that it might ruin the watch . how much is a new battery ? m : it 's $ 5 and we not only change a battery , but also guarantee it for a year and if you have the watch cleaned here , we can guarantee it for an additional 3 months .", "id": "train_3913"}