{"answers": "C", "options": ["m : ok , then i 'll check out this five books , thank you !", "m : you ca n't borrow books from us . we 're a bookstore , not a library .", "m : could you please check if this textbook is available in other bookstores ?", "m : tom , listen to the class carefully , you ca n't play mobile phone in class ."], "article": "m : excuse me , i 'm looking for a textbook by a professor herrick for the science course . f : let me check . i 'm sorry . it 's sold out .", "id": "train_5623"}