Excluded from the additional taxes imposed by KRS 139.200 and 139.310 are gross receipts:
(1) Derived from sales of and the storage, use, or other consumption of tangible personal property purchased for use in the performance of a lump-sum, fixed-fee contract executed on or before March 9, 1990;
(2) Derived from sales made under fixed price sales contracts executed on or before March 9, 1990, provided the contract specifies a five percent (5%) sales tax rate; and (3) Derived from a lease or rental agreement entered into on or before March 9, 1990.