Please choose the correct ending to complete the given sentence: Food and Entertaining: [header] How to get free products from amazon for review [title] Get familiar with the terms and features you'll be using. [step] This is the string of characters immediately after the "/dp/" in the product url. [substeps] This is how to identify a product.

Ending1: You can also search for a product using this. [title] Understand what a product asin is. Ending2: A product that is free from amazon will have your name only and your date of purchase in parenthesis next to the name. A product that is free from amazon.com will have your contact information at the top. Ending3: For example, review browsing apps that are programmed to recognize the types of items you're purchasing. Note this information before you launch the app. Ending4: Terms and features you've probably heard of. A description can give you a way to get quality reviews.

Answer format: ending1/ending2/ending3/ending4