Question 1 (45 points). Table below contains information about an environmental clean-up project in the township of Hiles. Shorten the project three weeks by finding the minimum-cost schedule. Assume that project indirect costs and penalty costs are negligible. Identify activities to crash while minimizing the additional crash costs.

Table 1 - Environmental Project Data

Activity	Normal Time (weeks)	Crash Time (weeks)	Cost to Crash ($ per week)	Immediate Predecessor(s)
A	7	6	200	None
B	12	9	250	None
C	7	6	250	A
D	6	5	300	A
E	1	1	-	B
F	1	1	-	C, D
G	3	1	200	D, E
H	3	2	350	F
I	2	2	-	G