Please choose the correct ending to complete the given sentence: Finance and Business: [header] How to use zero percent interest credit cards to get out of debt [title] Review all of your existing credit card statements. [step] Make a comprehensive list of how much you owe, on which cards, at how much interest. [substeps] Whether or not you include other types of debt, such as mortgages or car loans, is up to you.

Ending1: You don't need to include deposits or credit card debt if you don't want to enter other categories. For instance, you might have made money from car loans but used another credit card to finance your groceries. Ending2: The only way to know is to take notes. If you can't remember all of your credit card statements, ask a friend or family member to keep notes of your statements. Ending3: However, you must regularly know everything you are owed. This includes hidden expenses, like car loans you haven't used in a long time, or loan information from your mortgage company, beyond just credit card statements. Ending4: As a general rule you save the most money when you concentrate on paying off highest-interest debt first, and the less revolving debt you have the better your credit will appear. That usually means paying your high-interest credit cards off first.

Answer format: ending1/ending2/ending3/ending4