The maximum density shall be fixed by a sub-designation as follows:
(A) R(A). One unit for each 12,000 square feet of site area.
(B) R(1). One unit for each 6,000 square feet of site area.
(C) R(2). One unit for each 3,000 square feet of site area.
(D) R(3). One unit for each 1,800 square feet of site area.
('61 Code, § 10-3.503) (Ord. 380 C.S., passed 9-21-81; Am. Ord. 607 C.S., passed 12-15-93)