Given the small project for an AOA network:Activity: A$,$ B$,$ C$,$ D$,$ EImmediate Predecessor$($s$)$: D$,$ D$,$ AB$,$ None, DTime Duration $($days$)$: $7,6,5,4,13$How many dummy arc$($s$)$ in this AOA network should be there totally? Select one: A$.0$B$.4$C$.1$D$.2$E$.3$