In this task, you're given the title of a five-sentence story, the first four sentences, and two options for the fifth sentence as a and b. Your job is to pick the sentence option that seamlessly connects with the rest of the story, indicating your choice as 'a' or 'b'. If both sentences are plausible, pick the one that makes more sense.

Title: Easy Out. Sentence 1: The pitcher threw a high lob towards the batter. Sentence 2: The batter swung and the ball went sailing upward. Sentence 3: The second base player ran infield and took off his cap. Sentence 4: He raised his glove and waited for the ball to land in it. Choices: a. He caught the ball and the batter was out. b. Once the doors opened he ran to the shelves and got a book.
a