What's the complement of $F(A,B,C)=$prod$(0)$

As a sum of products

a$.(0)$

b$.$ prod$(1,2,3,4,5,6,7)$

c$.A+B+C$

d$.{\displaystyle \underset{?}{\overset{?}{}}}(1,2,3,4,5,6,7)$

e$.A^{}+B^{}+C^{}$