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: Tree-Free Greetings cc33791 Hilarious Aunty Acid Double-Walled Cool Cup with Reusable Straw, Time Flies, 16-Ounce
Product 2: Tree-Free Greetings cc33871 Hilarious Aunty Acid Double-Walled Cool Cup with Reusable Straw, Just Me, 16-Ounce

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