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: Canon Lens Rear Cap for Canon EF SLR Lenses
Product 2: Opteka High Definition 2X Telephoto Converter for Opteka 650-1300mm, 500mm and 800mm SLR Lenses

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