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: OPTP PRO-ROLLER Standard Density Foam Roller - Durable Roller for Massage, Stretching, Fitness, Yoga and Pilates
Product 2: Pilates Ring - Superior Unbreakable Fitness Magic Circle for Toning Thighs, Abs and Legs

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