A Company wants to execute a project within 95 weeks. This project includes 10 activities (labeled A, B..... J), where their precedence relationships are shown in the following table: Activity A B D E F G H I J Predecessor Activity A B B B D E,G E,G F,C Normal Time(weeks) 32 28 36 16 32 54 17 20 34 18 Crash Time (weeks) 28 25 31 13 27 47 15 17 30 16 Normal Cost (in million S) 160 125 170 60 135 215 90 a) Draw the project network according to the previous table. (c) Which is the critical path and what is its length? 120 190 80 Crash Cost (in million S) 180 146 210 72 160 257 96 132 226 84 (b)Find all possible paths and the corresponding lengths to finish the project. (d) Determine the least expensive way to crash activities to reduce overall duration to 95 weeks using Marginal cost analysis.