Please choose the correct ending to complete the given sentence: Finance and Business: [header] How to save time grocery shopping [title] Make a detailed grocery list. [step] Write down the items you need, starting with the essentials. Do a quick scan of your refrigerator and pantry to see what you're out of and what you can hold off on buying.

Ending1: This is a very important factor in allowing you to store your food rather than buying it in bulk. [title] Decide how long you'll be using the refrigerator. Ending2: Go over your list a few times to make sure it's complete-if you forget something, you'll just have to make another trip out. [substeps] Don't wait until right before you head to the supermarket to put your grocery list together. Ending3: Basically, try not to overspend. [title] Determine which items are in stock in the pantry and stock up on the rest. Ending4: Also, keep this list handy in the event that you forget what you need in a moment. [substeps] Carrying food around in your pocket or bag can give you extra time to make necessities ahead of time.

Answer format: ending1/ending2/ending3/ending4