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: A man was a radio host. Sentence 2: A fan recognized his voice. Sentence 3: The fan wanted an autograph. Sentence 4: The radio host was happy to oblige. Sentence 5: The fan left the encounter feeling happy. Choices: a. radio. b. Jungle journey.
a