Please choose the correct ending to complete the given sentence: Finance and Business: [header] How to spot an atm skimmer [title] Examine the card reader for signs of tampering. [step] Card readers should be sturdily attached to the machine. Anything unusual or out of place may be a sign that it has been tampered with.

Ending1: Be certain you report it to the corporate monitoring agency. [substeps] You might see a decline in the card reader readings if you've overcharged it. Ending2: [title] Place a drop lock on it to identify it. [step] Most machines have a drop lock that can identify it. Ending3: In particular, be wary if : [substeps] There are glue marks around the reader. There is tape sticking out from under the reader. Ending4: [substeps] On modern machines, some devices come with a reader, but check the batteries if the card reader does not fit. You can use a second card reader if none appears to be working.

Answer format: ending1/ending2/ending3/ending4