Please choose the correct ending to complete the given sentence: Home and Garden: [header] How to clean old cast iron [title] Scrape the rust off with steel wool. [step] Apply force to the steel wool as you wipe back and forth to remove all of the rust. The dry rust should begin to peel and flake off.

Ending1: Continue to do this until you expose the raw cast iron under the rust. [title] Wash the cast iron with hot water and dish soap. Ending2: Continue scraping away the rust until the area is free of bits or chips. [title] Take out the rust with a tin brush, and clean out the inside with a rag. Ending3: Be gentle as you do this as you do not want to damage the wood. [substeps] Keep the steel wool back, so that its surface isn't touching the glue or caulk on your cast iron. Ending4: A metal polishing rag or dish rag is ideal for this job. Remove as much of the rust as possible, then clean the whole piece with steel wool.

Answer format: ending1/ending2/ending3/ending4