{"answers": "C", "options": ["m : of course you can , but be sure to return the car in four days , because you ca n't make the rent longer through phone calls .", "m : yeah , since you do n't like the plan for renting seven days , be sure to return the car in five days , please remember that", "m : yes , and do n't forget to return the car on time if you do n't want to be in trouble , you only have seven days for having the car .", "m : sure . remember you only have seven days , and you can only get the rest of your money when you choose to return the car after 6 days ."], "article": "m : how may i help you ? f : hi , i would like to rent a car . m : sure , did you make a reservation ? f : no , i decided to rent one when i got off the plane just now . is that ok ? m : of course . i was just checking . so how many days do you need the car for ? f : can i just do 4 days for now and make the rent longer through a phone call later ? m : in that case , i suggest you go for 7 days , which will give you a 20 % discount . and if you choose to return the car after 5 days , you can get the rest of your money back . f : ok , i will do that . can i return the car at the train station ?", "id": "train_3499"}