Optional Repayments The Borrower may at any time and from time to time repay the Revolving Credit Loans, in whole or in part, upon at least three (3) Business Days' irrevocable notice to the Administrative Agent with respect to LIBOR Rate Loans and one (1) Business Day's irrevocable notice with respect to Base Rate Loans, in the form attached hereto as Exhibit D (a "Notice of Prepayment") specifying the date and amount of repayment and whether the repayment is of LIBOR Rate Loans, Base Rate Loans, or a combination thereof, and, if of a combination thereof, the amount allocable to each. Upon receipt of such notice, the Administrative Agent shall promptly notify each Lender. If any such notice is given, the amount specified in such notice shall be due and payable on the date set forth in such notice. Partial repayments shall be in an aggregate amount of $1,000,000 or a whole multiple of $250,000 in excess thereof with respect to Base Rate Loans and $5,000,000 or a whole multiple of $1,000,000 in excess thereof with respect to LIBOR Rate Loans.