Which of the following statements are true?
A. Total slake is the amount of time one can delay the start of a particular task without affecting the start of a successor task.
B. Free slake is the time one can delay the start of a particular task, without delaying the completion of the project.
C. Total slake is the amount of time one can delay the start of a particular task, without delaying the completion of the project.
D. Free slake is the amount of time one can delay the start of a particular task without affecting the start of a successor task.