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: Cokin Filter Holder for Z-Pro Series
Product 2: Complete Square Neutral Density (ND)Lens Filter Set for Nikon 3000, D3100, D3200, D3300, D5000, D5100, D5200, D5300, D7000, D7100, DF, D3, D3S, D3X, D4, D40, D40x, D50, D60, D70, D70s, D80, D90, D100, D200, D300, D600, D610, D700, D750, D800, D800E, D810, Digital SLR Cameras, Which Has Any Of These (18-55mm, 55-200mm, 24mm f/2.8D, 28mm f/2.8D, 35mm f/1.8G, 35mm f/2.0D, 40mm f/2.8G, 50mm f/1.4D, 50mm f/1.8D &amp; 85mm f/3.5G) Nikon Lenses + More!!

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