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: DTECH RS232 to RS485 / RS422 Serial Communication Data Converter Adapter Mini-Size
Product 2: StarTech.com Assembled DB9 Male Solder D-SUB Connector with Plastic Backshell (C9PSM)

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