Definition: In this task, you're given four sentences of a story written in natural language. The given story is not complete and your job is to complete the story by selecting one of the sentence choices from (A) and (B), such that the story sounds fully coherent.
Input: Sentence1: John had worked hard on his homework but couldn't find it anywhere. Sentence2: Then he came upon some paper scraps on the floor. Sentence3: His dog, Betty, was sitting nearby with a paper scrap in her mouth. Sentence4: John was worried his teacher would think he was lying. 
 (A) John turned his homework in the next day. (B) John didn't know what to do.
Output:
B