129 The major difference between PERT and CPM networks is:
A.
PERT requires three time estimates whereas CPM requires one time estimate.
B.
PERT is used for construction projects whereas CPM is used for R & D.
C.
PERT addresses only time whereas CPM also includes cost and resource availability.
D.
PERT requires computer solutions whereas CPM is a manual technique.
E.
PERT is measured in days whereas CPM uses weeks or months