Instruction: Analyze the titles of Product 1 and Product 2 to determine if they are similar, if they will be purchased or viewed together, and choose the corresponding option.

Input:
Product 1: Ardinbir Universal Softbox Diffuser for Pop-up Flash of Nikon D90, DX, D90, D40, D60, D80, D70, D40x, D50, D70s, D300s, D700, D300, DX, D200, D100, D3000, D5000, D3s, D3x, D3, D1, D2x
Product 2: Flash Diffuser Light Softbox 6x5&rdquo; by Altura Photo (Universal, Collapsible with Storage Pouch) for Canon, Yongnuo and Nikon Speedlight

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