Definition: 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'.
Input: Sentence 1: My email provider updated their systems. Sentence 2: The new system automatically sorts my mail into categories. Sentence 3: I like the new functions, but miss having unread mail at the top. Sentence 4: There is no way to keep the new functions and the old unread feature. Sentence 5: I used a search manipulation with a bookmark to hack the old feature. Choices: a. Unread Emails. b. Camping.

a