Instruction: Predict whether two products are similar, whether two products are likely to be purchased or viewed together based on their titles. Choose your answer from the provided options.

Input:
Product 1: Pentax 17-70mm f/4 DA SMC AL IF SDM Lens for Pentax Digital SLR Cameras
Product 2: Pentax K-Mount HD DA 15mm f/4 ED AL Fixed Lens for Pentax KAF Cameras ( Limited Silver)

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