(b) Gross income from the sale of a warranty, maintenance, or similar service contract in connection with the rental, leasing, and licensing of tangible personal property shall be exempt.
(c) Separately stated charges for repair not included as part of a warranty, maintenance, or similar service contract relating to the rental, leasing, or licensing of tangible personal property are exempt from the tax imposed by Section 12-450; however, such income is subject to the provisions of Sections 12-460 and 12-465, and the provisions of Regulation 12-465.1.