Identify the theorems and$/$or identities that justify each step in the derivation below. If A and B are sets in a finite universe U$,$ then N$($A n B$)=$ N$($U n $($A n B$))=$ N$($U n $(($A n B$)99=$ N$($U $((($A n B$)999)=$ N$($U $($An B$)9=$ N$($U$)$ N$(($A n B$))=$ N$($U$)-$ N$($ACUBC$)=$ N$($U$)($N$($AC$)+$ N$($BC$)$ N$($AC B$9)(---$Select$---(---$Select$------$Select$---$ by De Morgan's law by the difference rule by the double complement law by the idempotent law by the identity law by the inclusion$/$exclusion rule by the set difference law Submit Answer