{"answers": "C", "options": ["f : why do you refuse to check the bill ? i am very angry .", "f : thank you very much , manager of china mobile company .", "f : you are really patient and helpful . that helps a lot , thank you !", "f : though you are patient , but what you said is not helpful at all ."], "article": "m : hello . this is the china telephone company . what can i do for you ? f : is this the complaints department ? m : yes , it is . f : i want to complain about the bill i received this month . i do n't think i 've made that many phone calls . have their rates gone up ? there must be a mistake in your billing . m : alright madam , tell me your phone number and i 'll check it for you . f : my number is 63513516 . m : thank you . please hold on for a moment . f : alright . m : hello ? f : yes , i 'm still here . m : well , there does n't seem to be any problems with your account . the billing is accurate . you must have overlooked the international call you made to europe . f : let me see . right . i 'm sorry , it 's my mistake . but it is still very expensive . m : well , why do n't you apply for the international dial service ? it 's free of charge . f : can i do that ? m : sure . you can . the rates are cheaper as you do without assistance from the operator . f : i see . well , thank you very much and i 'm sorry for bothering you . m : it 's no bother at all . that 's what we 're here for . thanks for calling .", "id": "train_112"}