Please choose the correct ending to complete the given sentence: Finance and Business: [header] How to avoid using credit cards online [title] Look for a " send a bill " option during any online checkout process. [step] Not all merchants offer this option. For those that do, you'll receive a bill in the mail for the goods you've ordered.

Ending1: [title] Select the merchant name in order to send the bill. [step] Enter the merchant name in the appropriate fields provided. Ending2: [title] Choose a merchant account before beginning the online checkout process. [step] If you use a credit card, then you'll automatically redirect funds to one merchant account. Ending3: Once you pay that bill, the goods will be shipped. [substeps] This option is sometimes available by phone even if it's not available online. Ending4: Choose the option to send the bill in the mail. For example, if you order groceries online, the shipping process might be different.

Answer format: ending1/ending2/ending3/ending4