A project network has the following activity details

Activities Predecessors Duration$($Weeks$)$

A $-6$

B A $4$

C A $3$

D B$,$ C $2$

E B$,$ C $5$

F D$,$ E $4$

G F $4$

If Activity D is delayed by $4$ weeks beyond its estimated duration, which of the following will be true?

Group of answer choices

Activity D will then have slack of one week

Activity E will start to have a slack

Activity D will be on the critical path

Activity G will no longer be on the critical path.