Instruction: Evaluate the titles of Product 1 and Product 2, then choose the option that best describes the relation between the two products.

Input:
Product 1: Hoppe's Phosphor Bronze 5.56mm/.223cal AR Rifle Chamber Brush (Pack of 3)
Product 2: Primary Arms Quick Detachable Flip To Side Mount - Standard Height, (Black)

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