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: BASTION Rear Cover Slide Back Plate Glock - Skull
Product 2: Sure Plug Gen 4-5 Laser Engraved Skull - Designed for Glock 17, 19, 22, 23, 31, 32, 34, and 35.

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