Fences and/or walls within the CBD, NC, RFD, CBDF, SC, and PO Zones, including those permitted with all conditionally permitted uses in these Zones, shall conform to the following requirements:
   A.   SECTION 12.0, except that in front yards of Zones SC, and PO, Class 2 or 3 fences may be erected up to a maximum height of seventy two (72) inches. In the CBD Zone, no fences or walls shall be permitted in the front yard.
   B.   Side and rear yard, class 1, 2, 3, 4, 5, 6, or 7, fences and/or walls, up to a height of seventy two (72) inches; except that Section 12.0 shall prevail at all intersections.