Please choose the correct ending to complete the given sentence: Finance and Business: [header] How to calculate savings bond interest [title] Determine the bond's series. [step] The bond's series indicates the type and nature of the savings bond. Currently, the active bond series include e, ee, and i bonds.

Ending1: [substeps] Liabilities against a certain bond are limited by the type of bond set aside and the maturity maturity date of the bond. Liabilities against bonds set aside are minimum and maximum bonds. Ending2: The series have four main divisions : [substeps] Fixed savings bond bonds. Fixed savings bonds are one of the five classifications. Ending3: This information can be found in the upper right-hand corner of the bond certificate. If you purchased your bond on treasury direct, this information will be available in your account. Ending4: [substeps] Choose between e and ee bonds based on the interest rate at which the bond is created. This will guide the specific figure that you find during calculation.

Answer format: ending1/ending2/ending3/ending4