Instructions: In this task, you're given the title and three arbitrary sentences out of a five-sentence story. You are also given three additional sentence options, a, b, and c, that may or may not belong to the story. Your job is to pick the two options that seamlessly connect with the rest of the story; note that the selected choices may fit into the story at any point. Indicate your selected choices in order, i.e., as 'ab'/'bc'/'ac' and not as 'ba'/'ca'/'cb'. If options are equally plausible, pick the ones that make more sense.
Input: Title: She was doing badly in the class. Gretchen decided to withdraw from the class. The next semester, Gretchen had a lighter work schedule. Choices: a. Gretchen was enrolled in a class in college. b. She decided to try taking the class again. c. But at least Ian got twenty dollars for it.
Output:
ab