Given the following task time estimates (days)

Task	Time	Predecessor
A	19	--
B	12	--
C	9
D	12	A
E	20	B, C
F	14	D, E
G	28	D
H	15	F
I	18	G, H

a. What is the critical path? [ Select ] ["B, C, F, H, I", "B, E, F, H, I", "A, D, E, F, G, I", "A, C, D, G", "C, E, F, H, I"]

b. What is the project length? [ Select ] ["75 days", "72.5 days", "79 days", "91.5 days", "83 days"]

c. How much slack in task B.? [ Select ] ["4", "2", "3", "1", "0 (zero), it is on the critical path"]

d. How much slack is in task A.? [ Select ] ["3 days", "zero - it is on the critical path", "15 days", "8 days", "1 day"]

e. What is the early start / early finish for task F.? [ Select ] ["19 and 31", "61 and 79", "20 and 34", "32 and 46", "0 and 14"]

f. What is the late start / late finish for task G.? [ Select ] ["12 and 32", "33 and 61", "20 and 32", "31 and 59", "46 and 61"]

g. What if task A increased by 2 days. What would be the project length and the critical path? [ Select ] ["82 days; critical path C, F, G, H, I", "80 days; critical path A, D, F, G, H, I", "no change - same as the current time frame and critical path", "a reduction to 77 days; critical path C, D, E, G, H, I", "81 days; critical path B, E, F, G, H, I"]