Please choose the correct ending to complete the given sentence: Finance and Business: [header] How to make money on credit cards [title] Select the right credit card. [step] In order to reap the benefits of a cash back credit card, and ultimately reduce the costs of your credit cards, you must consider a variety of factors when selecting your card. [substeps] Ask yourself where and when you'll use your credit card.

Ending1: Know what habits or activities you spend the most money on and plan accordingly. Are you a big traveler? Look for credit cards that offer cash back rewards for airfare and hotel stays. Ending2: Many cards offer multiple, or " variable, " billing payments. You are likely to pay interest on any payments you make, but rather will be able to use your cash back card at any time of the day. Ending3: If you're using a credit card only in circumstances where an elderly or sad customer is, high-end credit cards probably aren't the right choice for your customers. Decide which card makes the most sense in your particular situation. Ending4: Find out when and how much of the cards, brands, and services will be used, as well as what your credit limit is. Decide whether your account is appropriate for payments of any kind, how frequent you can be, and whether your card uses a certain line of credit.

Answer format: ending1/ending2/ending3/ending4