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: M1 Carbine Rear Sight Removal and Installation Tool
Product 2: Numrich Gun Parts U.S. Military M1 Garand Carbine Buttplate Screw

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