Please choose the correct solution to the question: How can I sharpen knives at home without a knife sharpener?

Solution1: Invert the bowl, rub blade against the Ceramic ring under the base of the bowl to sharpen knives.

Solution2: Invert the bowl, fill bowl with cold water soak knife over night atop the Ceramic ring under the base of the bowl to sharpen knives.

Answer format: solution1/solution2
Answer: solution1