Task: Product_Relation_Prediction
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: Yamaha RX-V473 5.1- Channel Network AV Receiver (Discontinued by Manufacturer)
Product 2: Yamaha TSR-6750WA 7.2-channel Network Receiver with Wi-fi Adaptor (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: B