{"answers": "C", "options": ["f : i wore it when swimming . no wonder it 's completely ruined by water .", "f : but my watch is still running , why does it need a new battery ?", "f : oh , i understand . where can i buy a new battery for my watch ?", "f : indeed , everything about my watch is normal . it 's just dirty ."], "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 .", "id": "train_3912"}