You will be given a definition of a task first, then some input of the task.
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: Rachel could not wait to turn 16. Sentence 2: She often dreamed of the day that she would be able to drive. Sentence 3: On her 16th birthday, her parents took her to get her license. Sentence 4: She was very happy to learn that she passed her test. Sentence 5: For her big present, her parents bought her a car of her own. Choices: a. Rachel. b. The Plane.
Output:
a