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: Samsung NX1 Dual Macro LED Ring Light/Flash (Includes Necessary Adapters/Rings for Mounting On All Samsung Lenses)
Product 2: Samsung NX30 Dual Macro LED Ring Light/Flash (Includes Lens Adapters for Mounting On Samsung Lenses)

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: C