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: Polk Audio PSW505 12-Inch Powered Subwoofer (Single, Black)
Product 2: Polk Audio Rti A3 Cherry Rti A3 6.5&quot; Cherry High Performance Bookshelf Loudspeakers Am3372-a

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: A