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: Joanna has been avoiding the library because she knew a book was late. Sentence 2: Her friends invited her to go to the library to study. Sentence 3: Joanna reluctantly accepted and tried her best to avoid being seen. Sentence 4: The librarian immediately spotted her upon entry and pulled her aside. Sentence 5: She was embarrassingly told to pay her fine while her friends watched. Choices: a. The Wet Carpet. b. A Late Fee.
b