Instruction: Given the title of two products, predict if the two products are similar, if the two products will be purchased or viewed together. Answer only from the options.

Input:
Product 1: Panasonic PV-V4521 4-Head Hi-Fi Stereo VCR
Product 2: Sony SLV-N500 4-Head Hi-Fi VCR

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: B