{"answers": "D", "options": ["m : i agree . it 's more convenient , although petrol is very cheap .", "m : i agree . it 's more environmental than driving , although petrol is very cheap .", "m : i do n't think they can save money by cycling , because petrol is very cheap .", "m : i agree . it 's cheap ."], "article": "f : frank and peter want new bicycles . petrol is very expensive , so they both want to cycle to work .", "id": "train_4269"}