Please choose the correct ending to complete the given sentence: Home and Garden: [header] How to clean leather chairs [title] Determine the type of leather. [step] Before you attempt to clean a leather sofa, determine the type of leather. Manufacturer's tags found on leather furniture generally provide cleaning tips and warnings.

Ending1: Dirt and grime may also indicate the type of materials used in cleaning the sofa. [substeps] If you need to clean the leather sofa using specific cleaners or cleansing cloths, the problem is with the type of leather. Ending2: [substeps] Look to see if there are any tags attached to your furniture. If you don't find any, look at the written material that came with your furniture when you purchased it. Ending3: There are two types of stains made by everyday wear and tear and one type of material used often in the upholstery. [substeps] Leather is the rougher and milder of the leather varieties, with unpleasant smells that strike a novice upholstery professional. Ending4: If you don't, you may want to hire someone to help you read the labels. [substeps] Generally, leather padding is made out of leather that holds well over time and allows it to retain water and oils.

Answer format: ending1/ending2/ending3/ending4