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: Kate was very bored at work. Sentence 2: A friend sent an email link to an article. Sentence 3: She needed to focus on her job. Sentence 4: But decided she would take 20 minutes to read the article. Sentence 5: Two hours later she was still reading article after article. Choices: a. Article. b. Luxury Towels.
a