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: Tom was struggling in school. Sentence 2: He decided to hire a tutor. Sentence 3: He found the tutor very useful. Sentence 4: His grades soon improved. Sentence 5: Tom became very happy with his academic performance. Choices: a. Being rude. b. School.

b