Please choose the correct solution to the question: to Clean a Wooden Cutting Board with Lemon and Salt

Solution1: cut lemon in half, scrub the cutting board surface with the lemon, sprinkle granulated sugar on it  liberally, wait for 15 minutes then rinse with water

Solution2: cut lemon in half, scrub the cutting board surface with the lemon, sprinkle coarse salt on it  liberally, wait for 15 minutes then rinse with water

Answer format: solution1/solution2
Answer: solution2