Please choose the correct ending to complete the given sentence: Health: [header] How to check a condom [title] Check the expiration date on the box at the store. [step] Look before you buy to make sure that the condoms you're about to purchase haven't expired. Do not purchase or use expire condoms.

Ending1: [substeps] The expiration date may have passed. Call the store and make sure they do not have expiration dates in their condoms. Ending2: [substeps] Expiration dates should have a month and year. Expired condoms weaken over time and may easily break. Ending3: If a condom lasts any longer than the day it was purchased, it is most likely expired. [substeps] Expired expiration condoms generally require replacement date every two years. Ending4: There is a difference between both forms of condom. Expiration dates on condoms tell you how old they are and when they last.

Answer format: ending1/ending2/ending3/ending4