{"answers": "A", "options": ["m : great ! i 'll pay $ 108 by card .", "m : okay . i want to buy these three types and i 'll pay $ 30 by card . because each one is 10 dollars as you said .", "m : wow , it 's quite expensive . i 'll get two for $ 108 , as you said each type is 54 dollars .", "m : okay . after 10 % discount , i 'll pay you $ 120 for four types ."], "article": "m : may i have that type please ? how much does it cost ? f : it 's $ 30 . but today we offer a 10 % discount , if you purchase more than 3 .", "id": "train_6466"}