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: ASC Chevy Silverado or GMC Sierra Full Size Extended Cab Truck 1999-2006 Dual 12&quot; Subwoofer Custom Fit Sub Box Speaker Enclosure
Product 2: Metra 40-GM10 GM Antenna Adapter

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