Please choose the correct ending to complete the given sentence: Health: [header] How to buy a glucose meter [title] Prioritize your primary goals. [step] Some models of glucometers offer basic readings but do not store records over time. Others include memory storage that maintains data about each reading, including the date and time for several months.

Ending1: The main benefit of glucometers is that data can usually compare (analytically) with each other. The more data the manufacturer allows, the greater the cost. Ending2: There are models that require only a small sample of blood to successfully complete a reading, something that diabetics who must monitor blood sugar once daily or more will find helpful. Even a factor such as size may be important for choosing the right machine. Ending3: [substeps] Your primary goal probably is to calculate glucose levels in the blood from the activity of bacteria or it may be to calculate glucose from the fiber in your food. Some models of glucometers provide l/v of information for your readings. Ending4: Figure out your primary goals before buying a glucometer. Not every model of an meter will allow you to perform a full reading.

Answer format: ending1/ending2/ending3/ending4