Simplify the following Boolean Expression using Boolean Postulates$/$Properties$/$Theorems:

$(\frac{?}{\text{b}\text{a}\text{r}}(A)\frac{+}{b}ar(B))(\frac{A}{b}ar(B)+\frac{B}{b}ar(C)+AC)$

$\frac{?}{\text{b}\text{a}\text{r}}(C)+\frac{A}{b}ar(B)$

$\frac{A}{b}ar(B)\frac{+}{b}ar(A)\frac{B}{b}ar(C)$

$A+BC$

$\frac{A}{b}ar(C)+\frac{B}{b}ar(C)$

$\frac{?}{\text{b}\text{a}\text{r}}(C)+AB$