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: Pyle Marine Bluetooth Stereo Radio - 12v Single DIN Style Digital Boat In dash Radio Receiver System with Built-in Mic, Digital LCD, RCA, MP3, USB, SD, AM FM Radio - Remote Control - PLMR21BT (White)
Product 2: Water Resistant Marine Stereo Cover - Smoke Colored Heavy Duty Boat Radio Protector Shield with Flip-up Door &amp; Spring Loaded Release - Mounting Gasket Included - Pyle PLMRCW1

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