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'.

Sentence 1: Tim and Bob were always fighting when they were younger. Sentence 2: Their grandma told them about pillow fights. Sentence 3: They decided to hit each other with soft pillows instead of fists. Sentence 4: Their grandma thought she had done a good thing. Sentence 5: Tim and Bob now had a safer way to hit each other. Choices: a. Jeff loses his cool. b. Pillow fight.
b