Please choose the correct ending to complete the given sentence: Travel: [header] How to check out of a hotel [title] Leave a credit card with the front desk when necessary. [step] Debit cards left with the front desk during check in are a high risk for fraud. In many cases, money illegally withdrawn from your debit account cannot be returned.

Ending1: Fraudulent transactions made on credit cards, however, can generally be contested for a full refund. [substeps] If you don't have a credit card when checking in, see if you can substitute a driver's license or a similar item for a credit or debit card. Ending2: Requiring that the purchases be withdrawn shortly afterwards can reduce risk of theft. [substeps] Knock on the front door before you enter the hotel room if you do not have your card ready to use. Ending3: [title] Verify that no emergency room is nearby. [step] This does not necessarily mean no thief would be able to enter your room. Ending4: Transaction of non-stop debit cards can be linked to fraudulent travel papers. Make sure you leave another credit card for when you go behind locked doors or when you request credit.

Answer format: ending1/ending2/ending3/ending4