In the critical path method of construction planning, Free Float can be_____________?

Consider the following statements ?
1. greater than Total Float.
2. greater than Independent Float
3. equal to Total Float.
4. less than Independent Float. Of these statements
A. 1 and 4 are correct
B. 2 and 3 are correct
C. 1 and 4 are correct
D. 1 and 2 are correct