Which of the Following Statements About Float Is NOT True

Which of the following statements about float is NOT true?

A) Float is used to make sure that the total duration of the path fits with the expected completion date
B) Float may not be added to activities on the critical path without extending the critical path
C) Total float is the amount of time which can be added without creating a new critical path
D) Free float is the amount of time which can be added to an activity without affecting the float of subsequent activities