Given the task definition and input, reply with output. 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: Anna had always eaten brand name cereal. Sentence 2: When she married and had kids, though, her budget tightened. Sentence 3: She decided to sample the store brands. Sentence 4: To her surprise, they tasted great! Sentence 5: Anna started buying nothing but store brands. Choices: a. Slam. b. Brand.
b