AC<P>AVC \mathrm {AC < P > AVC}AC<P>AVC
AC<P<AVC \mathrm {AC < P < AVC}AC<P<AVC
AC>P>AVC \mathrm {AC > P > AVC}AC>P>AVC
AC=P=AVC \mathrm {AC = P = AVC}AC=P=AVC