Please choose the correct solution to the question: How do you remove hard water stains from stainless steel?

Solution1: Soak the edge of a cloth or sponge in the club soda and wipe over the metal surface. Repeat as needed until the water stains have been removed completely.

Solution2: Soak the edge of a cloth or sponge in the diet soda and wipe over the metal surface. Repeat as needed until the water stains have been removed completely.

Answer format: solution1/solution2
Answer: solution1