Please choose the correct ending to complete the given sentence: Food and Entertaining: [header] How to maintain your kitchen knife [title] Always cut on a cutting board. [step] Using marble, granite, or any other solid surface is too hard and unyielding for a kitchen knife. This can dull your knife much more quickly.

Ending1: [substeps] Choose a wooden cutting board instead of one made of plastic or any hard, solid material, such as glass. [title] Sharpen and hone your knife regularly. Ending2: You will need to use a sharp cutting board that is 3 to 4 feet (1.8 to 3.2 m) in diameter to cut. Marble is also particularly sensitive to pressure and is prone to rust. Ending3: [title] Sharpen your knives using a spare set of knives. [step] These knives have rounded sides that are meant to make the blade sharper. Ending4: To prevent damage to the knife, never apply pressure to the handle. [title] Make a point of removing all fat and weed from the blade.

Answer format: ending1/ending2/ending3/ending4