Instruction: Analyze the titles of Product 1 and Product 2 to determine if they are similar, if they will be purchased or viewed together, and choose the corresponding option.

Input:
Product 1: EZSound Box - Front Play Button for Personal Messages, Favorite Tunes, Stuffed Toys, Science Projects, Hobbies, Craft Projects, Talking Displays, etc - 200 seconds - Rerecordable thru Audio Port
Product 2: RadioShack 9V Digital Voice Recording Module

Options:
A: Users who buy product 1 may also buy product 2.
B: Users who view product 1 may also view product 2.
C: The product 1 is similar with the product 2.
Answer: C