Consider a construction project with 7 activities as shown in the table below. The predecessors of each activity and the duration of the activities are given. The number of cranes (consider it as a resource) required by each activity is also listed. The organization has only 6 cranes available with them. Activity Predecessor(s) Duration (in days) # of cranes needed A - 3 6 B A 2 1 C B 5 5 D B 4 2 E C 9 4