{"answers": "C", "options": ["f : please let me konw when you have booked tickets to go home .", "f : ok , maybe you should call the tourist information center to confirm tuesday 's visit .", "f : thank you for making a phone call to get some information .", "f : i do n't know why you want go to the factory to make an appointment instead of calling the tourist information center ."], "article": "m : we still have one more day to go before we return home . what do you want to see tomorrow ? f : no idea . we 've enjoyed both the natural scenery and the city sights ? what else is there to see ? m : how about a factory tour ? f : you mean visit a factory ? m : yes , i heard there 's a large car company nearby that is open to the public every weekend . we can go there to see how a car is made and learn more about the car industry . f : good idea . i 've always been interested in that . how much is the entrance fee ? m : i 'm not sure , but as far as i know , most factory tours are free . they are sponsored by the car company providing the tour . f : really ? what do the companies do that for ? m : i believe most of them think of it as good public relations . they can promote their products and make their company better known . f : oh , i see . so factory tours are good for companies as well as visitors . m : exactly . f : do we need to make an appointment in advance ? m : i 'll call the tourist information center to check .", "id": "train_6"}