If three subzones are designated for each use, then which one of the following ... ...

If three subzones are designated for each use, then which one of the following is allowed?
(A) Exactly one subzone in Z3 is designated for industrial use and exactly one subzone in Z3 is designated for retail use.
(B) ...
(C) ...
(D) ...
(E) ...

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