Please choose the correct ending to complete the given sentence: Computers and Electronics: [header] How to save money on groceries [title] Take careful stock of your pantry and fridge before shopping. [step] The biggest way people end up overspending at the grocery store is inadequate planning. Before you go to the supermarket, take stock of what you already have.

Ending1: [substeps] According to a study by the national resource defense council, americans typically end up throwing out 25% of the groceries they buy. You can prevent this wastefulness by taking stock of your pantry and fridge before making a trip to the grocery store. Ending2: Try to replicate the layout of your pantry and freezer. Try not to neglect to include both perishable food and fresh produce when you grocery shop. Ending3: For instance, if a friend will go to the store to buy groceries for you, have her place all of them in the refrigerator. If your kid feels a little overwhelmed, she'll save more. Ending4: If you have a fridge, buy from it, since local grocery stores sometimes take refrigerated snacks and other perishable items. [substeps] Try not to spend a lot of time on the fridge.

Answer format: ending1/ending2/ending3/ending4