For the purpose of identifying land areas for a planned unit development, they shall be classified as follows and limited to parcels of not less than the size indicated:

A.

Residential: five acres (one acre within a rural activity center);

B.

Commercial: one acre;

C.

Mixed, residential and limited commercial: five acres (one acre within a rural activity center);

D.

Industrial: one acre. (Ord. 269 (part), 2002)