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 just finished four years at a prestigious college. Sentence 2: She decided to take a very unconventional next step-a trip. Sentence 3: She planned to backpack across Western Europe for 8 months! Sentence 4: It was a risky career move, but she focused on enjoying the moment. Sentence 5: And when she returned, several offices began courting her ASAP! Choices: a. Backpacker. b. Anaphylactic Shock.
a