Earliest Finish Time (EF)is the Earliest Time by Which a Specific

Earliest finish time (EF) is the earliest time by which a specific activity can be completed, calculated

A) by subtracting the activity's estimated duration from the earliest finish time of the activity's predecessor: EF = EF predecessor - Estimated Duration.
B) by subtracting the activity's estimated duration to the activity's earliest start time: EF = ES - Estimated Duration.
C) by adding the activity's estimated duration to the earliest start time of the activity's succeeding activity: EF = ES succeeding activity + Estimated Duration.
D) by adding the activity's estimated duration to the activity's earliest start time: EF = ES + Estimated Duration.