The Farmer’s American Bank is planning to install a new computerized accounts system. Bank management has determined the activities required to complete the project with the activity times in weeks as follows: Activity Description Predecessor Optimistic Most Likely Pessimistic a Position recruiting --- 5 8 17 b System development --- 3 12 15 c System training a 4 7 10 d Equipment training a 5 8 23 e Manual system test b, c 1 1 1 f Preliminary system change b, c 1 4 13 g Computer-personnel interface d, e 3 6 9 h Equipment modification d, e 1 2.5 7 i Equipment testing h 1 1 1 j System installation f, g 2 2 2 k Equipment changeover g, i 5 8 11 __________3a) What steps comprise the “critical path”