Instruction: Evaluate the titles of Product 1 and Product 2 to assess their similarity and whether they are likely to be purchased or viewed together. Then, select the appropriate option.

Input:
Product 1: Plantronics CS540/HL10 Headset with Lifter
Product 2: Plantronics Supraplus HW251 PLUS MONAURAL/VT HEADSET

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: A