On each Interest Payment Date (as defined in Exhibit B attached hereto), the Borrowers shall make a payment in the amount of the accrued interest on the outstanding principal balance of the Line of Credit. The entire unpaid principal amount of the Line of Credit, together with accrued and unpaid interest thereon and all other amounts payable hereunder in connection with the Line of Credit, shall be due and payable in full on December 31, 2021.