Which one of the following is an allowable way of designating subzones ... ...

Which one of the following is an allowable way of designating subzones within the three zones?
(A) Z1: no designated subzones Z2: one housing subzone, two retail subzones Z3: one industrial subzone, one retail subzone
(B) ...
(C) ...
(D) ...
(E) ...

*This question is included in Oct 2012 LSAT (PT67): Analytical Reasoning