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: Jessica thought she was ready for her baby to come. Sentence 2: She looked around the nursery, making sure everything was ready. Sentence 3: She then noticed that she had forgotten to buy a crib mattress. Sentence 4: She went to Target that afternoon to buy one. Sentence 5: She was pleased when she learned that crib mattresses were on sale. Choices: a. Nursery. b. The spoiled girl.
a