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: Gus tried making a call and was told he had no more minutes. Sentence 2: He thought he was paying for the unlimited plan. Sentence 3: Gus' provider told him he didn't have roaming on his phone. Sentence 4: He paid a premium to get it enabled. Sentence 5: Gus was able to make his important call. Choices: a. Choice Wireless. b. Money.

a