Given the project within the table below, calculate the following:

Activity	Duration (hours)	Immediate Predecessors
A	4	None
B	12	None
C	6	A
D	7	B, C
E	3	D
F	1	E
G	5	E, F

a. What is the project's minimum completion time? [ Select ] ["28", "30", "25", "29", "19"]

b. What is the critical path in the project? [ Select ] ["B, D, E, F, G", "A-C-D-E-F-G", "B-C-D-E-F-G", "A-B-D-F-G", "C-D-E-F-G"]

c. What is the slack for activity A? [ Select ] ["2", "3", "0 - it is on the critical path", "9", "5"]

d. What is the Early Start and Early Finish for Activity D? [ Select ] ["12, 19", "14, 21", "0, 7", "22, 29", "7, 14"]

e. What is the Late Start and Late Finish for activity C? [ Select ] ["6 and 12", "9 and 14", "4 and 6", "7 and 13", "0 and 6"]

f. What would happen to the overall project length if activity C now took an additional 3 hours to complete, now taking a total of 9 hours? [ Select ] ["The project would increase by 1 hour, because C only has 2 hours worth of slack - the project is now 29 hours", "the project length would remain the same, because C is a non-critical activity", "the project time would be reduced by 3 hours because activity C is on the critical path", "the project length would decrease because activity C has 3 hours worth of slack"]