It shall be unlawful for any person to engage in any business within the city except:
(A) A home occupation;
(B) A day nursery or nursery school and/or kindergarten in accordance with the requirements of § 110.19;
(C) The lease of apartment units in an apartment house existing on the date this code becomes effective; and
(D) Commercial and business establishments within the city existing on the date this code of ordinances becomes effective located on and facing the east side of Preston Street.
(1996 Code, § 9-2.01) Penalty, see § 110.99