Supplies manufactured in the United States shall be specified for all city purchases and shall be purchased unless the city determines that:
(‘89 Code, § 117.8)
(A) The supplies are not manufactured in the United States in reasonably available quantities;
(‘89 Code, § 117.8.1)
(B) The prices of the supplies manufactured in the United States exceed by an unreasonable amount the price of available and comparable supplies manufactured elsewhere;
(‘89 Code, § 117.8.2)
(C) The quality of the supplies manufactured in the United States is substantially less than the quality of comparably priced available supplies manufactured elsewhere; or
(‘89 Code, § 117.8.3)
(D) The purchase of supplies manufactured in the United States is not in the public interest.
(‘89 Code, § 117.8.4)