Definition: In this task, you're given five sentences, numbered 1 through 5, and two options a and b for possible titles for the story. Your job is to choose the title that better fits the story. Indicate your choice by 'a' or 'b'.
Input: Sentence 1: Penny was very thirsty. Sentence 2: She got a cup and filled it with water. Sentence 3: The cup leaked all over! Sentence 4: Penny was frustrated. Sentence 5: She threw it away and stomped away. Choices: a. The Sandals. b. The Cup.

b