$\backslash$begin$\{$tabular$\}\{|$l$|$l$|\}\backslash$hline An activity has an early start $($ES$)$ of day $3,$ a late start $($LS$)$ of day $13,$ an early finish $($EF$)$ of day $\backslash \backslash 9,$ and a late finish $($LF$)$ of day $19.$ The activity: $\backslash \backslash \backslash$hline A$)$ Is on the critical path. & B$)\backslash \backslash \backslash$hline C$)$ Is progressing well. & D$)$ Is a lag. $\backslash \backslash \backslash$hline $\backslash$end$\{$tabular$\}\backslash$begin$\{$tabular$\}\{|$l$|$l$|\}\backslash$hline $\backslash$multicolumn$\{3\}\{|$l$|\}\{$ AO activity diagrams are only represented using which representation? $\}\backslash \backslash \backslash$hline A$)$ Start$-$to$-$Start & B$)$

Start$-$to$-$Finish $\backslash \backslash \backslash$hline C$)$

Finish$-$to$-$Start & D$)$

Finish$-$to$-$Finish $\backslash \backslash \backslash$hline $\backslash$end$\{$tabular$\}$