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A company must perform a maintenance project consisting of seven activities. The activities, their predecessors, and their respective time estimates are presented here: Activity Break down both machines Clean machine I Clean machine 2 Re-set machine 1 Re-set machine 2 Re-calibrate both machines Final test Designation c D Immediate Predecessor Time in Days None B DandE 3 3 3 1 1 2 Draw Project Network and use CPM method to analyze the project, state the earliest and the latest times for each activity (A, B, C, D, E, F, G) in this project, identify the critical path.