Q$4)$ For a $4-$t$0-2$ active high priority encoder, if you know that the output is $($O$1)$ and the valid bit is I then which of the following represents a possible input to the circuit?

A$)E_0{E}_1{E}_2{E}_3=0000$

B$)E_0{E}_1{E}_2{E}_3=1101$

C$)E_0{E}_1{E}_2{E}_3=001!$

D$)E_0{E}_1{E}_2^{\text{l}\text{a}\text{r}\text{r}}{E}_3=1110$

E$)E_0{E}_1{E}_2{E}_3=1100$

F$)$ None of the answers