A Boolean function $F(A,B,C)=(\frac{?}{\text{b}\text{a}\text{r}}(A)+B)(A+C)(B+C)$

$($i$)$ By using the K$-$map, show which OR term is the redundant term.

$($ii$)$ Implement the function using a single $7400$ chip $(7400$ chip has $4$ units of $2-$input NAND gates$)$