Please choose the correct ending to complete the given sentence: Food and Entertaining: [header] How to plan a trip with aging parents [title] Make arrangements for medication. [step] Bring adequate supplies of any medications your aging parents might need. Keep medications in their original bottles whenever possible.

Ending1: Place each bottle or container in a clear plastic bag labeled with its name, dosage size and frequency, and administration instructions. Medications without this information might not be allowed through airport security checkpoints. Ending2: This will help them prevent serious medical ailments. [substeps] Ask a family member or friend if there are any medications that the aging parent does not already need. Ending3: You don't want to drop them off in an emergency or accidentally give them away once again. [substeps] Choose prescription medications for your aging parent's specific needs. Ending4: If needed, set up a travel phone with an internet connection and a phone charger in case of emergencies. [substeps] Adequate doses should be measured and stamped within three weeks of treatment.

Answer format: ending1/ending2/ending3/ending4