Q$4(10$ points$)$: Implement the following function F$($A$,$B$,$C$,$D$)=(0,2,4,6,8,10)$ using

a$.$ Mux $41$

b$.$ Decoders $3-$to$-8$

c$.$ AND$-$OR

d$.$ NAND$-$NAND

Q$5(6$ points$)$: In the following function determine the Essential prime implicant F$($A$,$B$,$C$,$D$)=\backslash$Sigma $(0,2,5,7,6,8\mathrm{.}9,10,11,13,14,15)$