Which of the following statements about float time are correct?

Float time is calculated during scheduling.

Which of the following statements about float time are correct? Note: There are 3 correct answers to this question
A . Float time can be negative
B . Activities with the time constraint "Must start on" always have a negative float time
C . The float time of WBS elements is calculated by extrapolation
D . By default, critical activities have a float time, which is less than or equal to zero
E . The maximum size of a free float is as large as the total float of an activity

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Answer: A,B,E