The critical path is established by calculating the following dates:

A．Start-to-start, start-to-finish, finish-to-finish, finish-to-star

B．Early start, early finish, late start, late finis

C．Predecessor-to-successor, predecessor-to-predecessor, successor-to-successo

D．Primary-to-secondary, primary-to-finish, secondary-to-secondary, finish-to-finis