$(1)$ A$.[]$B$.[0,1,2,3]$C$.[[0,1,2,3]]$D$.[[0],[1],[2],[3]]$E$.[[0,[1,[2,[3]]]]]$What is displayed to the console by this program?arr $=["$A$,"$B$","$C$","$D$","$E$"]$n $=$ arr$[0]$c $=$ arr$[-1]$for i in range$($len$($arr$))$:arr$[$i$]=$ cc $=$ np $=$ i $+1$if $($p $>=$ len$($arr$))$:p $=0$n $=$ arr$[$p$]$;print$($arr$[0])$A$.$ A B$.$ B C$.$ C D$.$ D E$.$ E