PLease solve in detail. Problem #$2(15$ pts$)-$ For the devices in the circuit, $\backslash$mu $\_($n$)$C$\_($ox$)=100\backslash$mu $($A$)/($V$^(2)),|$V$\_($t$)|=1$V$,\backslash$lambda $=0,$L $=1\backslash$mu m$,$ and W$=10\backslash$mu m$,$

aV$\_($A$),$V$\_($B$),$I$\_($D$1),$I$\_($D$2),$I$\_($D$3),$ and I$\_($D$4)$

bV$\_($A$)$ and I$\_($D$4)$ M$3$ and M$4$ are made to have W$=40\backslash$mu m $?$