Question 1 (45 points). Table below contains information about an environmental clean-up project in the township of Hiles. Shorten the project three weeks (i.e., the duration of the project should be three weeks shorter) 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. The steps should be shown in detail for getting full credit. At each step, you first identify critical paths, identify activities to crash and update the activity times. Table 1 - Environmental Project Data Activity Normal Time Crash Time (weeks) (weeks) A 7 6 B 12 9 7 6 D 6 5 E 1 1 F 1 1 G 3 1 H 3 2 I 2 2 Cost to Crash ($ per week) 200 250 250 300 Immediate Predecessor(s) None None A A B CD D, E F G 200 350