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: Jonah went to the lake with his dad. Sentence 2: They were playing with a radio control boat. Sentence 3: The boat moved into an area with some ducks. Sentence 4: One of the ducks attacked the boat. Sentence 5: The boat was damaged and slowly sank in the lake. Choices: a. Thunder Storm. b. The RC Boat.
b