The complement of the function $f(A,B,C,D)={\displaystyle \underset{?}{\overset{?}{}}}(4,5,7,12,15)$ in product of maxterms

form is

a$.$

$\frac{?}{\text{b}\text{a}\text{r}}(f)(A,B,C,D)=$prod$(4,5,7,12,15)$

b$.$

$\frac{?}{\text{b}\text{a}\text{r}}(f)(A,B,C,D)=$prod$(0,1,2,3,6,8,9,10,11,13,14{)}^x$

c$.$

$\frac{?}{\text{b}\text{a}\text{r}}(f)(A,B,C,D)={\displaystyle \underset{?}{\overset{?}{}}}(0,1,2,3,6,8,9,10,11,13,14)$

d$.$

$\frac{?}{\text{b}\text{a}\text{r}}(f)(A,B,C,D)={\displaystyle \underset{?}{\overset{?}{}}}(4,5,7,12,15)$