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: My wife's three day old loaf of bread went bad today. Sentence 2: I started looking at ways to retard mold. Sentence 3: I thought refrigerating the bread would work. Sentence 4: However, several websites said that would make things worse. Sentence 5: I told my wife the sites said to freeze the bread. Choices: a. Sweepstakes win. b. Refrigerate Bread?.
b