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: Nikon D90 12.3MP DX-Format CMOS Digital SLR Camera with 18-105 mm f/3.5-5.6G ED AF-S VR DX Nikkor Zoom Lens (OLD MODEL)
Product 2: Pentax K-7 14.6 MP Digital SLR with Shake Reduction and 720p HD Video with DA 18-55mm f/3.5-5.6 AL Weather Resistant Lens

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