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: The dog was very tiny. Sentence 2: She was a chihuahua. Sentence 3: She had a litter of puppies. Sentence 4: I asked how she was nursing them. Sentence 5: They said she had very tiny puppies. Choices: a. Princess. b. A Milk-Tooth.

a