Question $4($Mandatory$)(2$ points$)$

Which Boolean equation results from this Karnaugh Map?

$\backslash$table$[[,$C$$ D$,$c$$ D$,$CD$,$C D$],[\frac{?}{\text{b}\text{a}\text{r}}\frac{A}{b}ar(B),,1,,1],[$A B$,,1,,],[$A B$,,1,,1],[$A $\frac{?}{\text{b}\text{a}\text{r}}(B),,1,,1]]$

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

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

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

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

Question $7($Mandatory$)(2$ points$)$

At which point will output $x$ on this NOR timing diagram be HIGH?

point $3$

points $1,2,3,4$

points $1$ and $2$

point $5$