. Assume you have project with the following information : Activity A (Duration = 1, Predecessor None), Activity B (Duration = 2, Predecessor = A), Activity C (Duration = 2, Predecessor = B), Activity D (Duration = 4, Predecessor = B), Activity E (Duration = 1, Predecessor = B), Activity F (Duration = 5, Predecessor = C, D, E), the following activities are non critical: * (2 points) O A B. D. F. C, D, E C, D, E, F CE None of the others