Instruction: Evaluate the titles of Product 1 and Product 2, then choose the option that best describes the relation between the two products.

Input:
Product 1: Neewer Macro TTL Ring Flash Light with LED AF assist lamp for Canon E-TTL TTL Cameras / such as Canon EOS 5D Mark II EOS 6D EOS 7D EOS 70D EOS 60D EOS 60Da EOS 700D 650D 600D 400D 350D 300D 100D 1000D 1100D Rebel T5i T4i T3i Xti XT SL1 XS T3
Product 2: STK LP-E6 Battery for Canon 5D Mark II III and IV, 70D, 5Ds, 6D, 5Ds, 80D, 7D, 60D, 5Ds R DSLR Cameras BG-E14, BG-E13, BG-E11, BG-E9, BG-E7, BG-E6 Grips

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