Which of the following statements is$/$are correct? Choose all that apply.

A Business time and elapsed time are two kinds of lag time.

B

Adding lag time ensures that the next task isn't scheduled prematurely and that the number of Units is accurate so that resources are not overscheduled.

Lag time delays the start of the next task and is expressed as a positive number, in hours, days, or weeks.

D Elapsed time accounts for all time that passes once the task is complete.