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: The Hemming family took a trip up in the mountains with their truck. Sentence 2: As Josh Hemming was driving he felt something buzzing against his arm. Sentence 3: Josh jumped out of the truck and hurriedly took his shirt off. Sentence 4: As he shook his shirt out, a bee came buzzing from the sleeve. Sentence 5: Josh had escaped this bee encounter without being stung. Choices: a. Nightcap. b. Close Call.
b