From the following information, develop a PDM project network. Complete the forward and backward pass, compute activity slack, and identify the critical path. How many days will the project take? Activity Description Duration (days) Predecessor A Survey site 2 None B Excavate site 4 A C Install power lines 3 B D Install drainage 5 B E Pour foundation 3 C, D Use whatever approach and tool you wish (you could even do it by hand and scan and upload the result).