Given the following information, compute the early, late, and slack times for the project network.

ID	Task	Duration		Predecessor	Additional Lag Relationships	Lag
A	Post Signs	5
B	Prepare Site	6		A	Finish-start A to B	11
C	Lights	6		B
D	Dig Trenches	5		B
E	Lay Pipe	6		D	Start-start D to E	3
F	Back Fill	1		E	Start-start E to F	1
G	Pave	2		F
H	Paint Parking Lines	1		G	Finish-start G to H	1
I	Signage	3		G
J	Open Lot	1		C, H, I