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: Megan was going to find out the gender of her unborn baby. Sentence 2: She brought all of her family along for the exciting ultrasound. Sentence 3: As the technician searched, she gasped in delight. Sentence 4: She announced to everyone that Megan had twins in her. Sentence 5: Megan was terrified but everyone's happiness comforted her. Choices: a. beach. b. The Twin Surprise.

b