D)
for A)
Dual of F(A,B,C)=$\sum m(3,5,6,7) =\prod m(0,1,2,4)$
$\prod m(0,1,2,4) =\sum m(3,5,6,7)$
$\sum m(3,5,6,7)=\sum m(3,5,6,7)$
For B)
Dual of F(A,B,C)=$\sum m(1,2,4,7) =\prod m(0,3,5,6)$
$\prod m(7,6,3,1) =\sum m(1,2,4,7)$
$\sum m(1,2,4,7)=\sum m(1,2,4,7)$
For C)
Dual of F(A,B,C)=$\sum m(0,2,4,6) =\prod m(1,3,7,6)$
$\prod m(1,3,7,6)=\sum m(0,2,4,6)$
$\sum m(0,2,4,6)= \sum m(0,2,4,6)$
for D)
Dual of F(A,B,C)=$\sum m(0,1,4,6) =\prod m(7,6,3,1)$
$\prod m(7,6,3,1) =\sum m(0,2,4,5)$
$\sum m(0,1,4,6)\neq \sum m(0,2,4,5)$