Consider a project with six activities: H, B, C, D, E, and F. Assume H and F can be started as soon as the project is kicked off. B can start as soon as H is completed, C can start as soon as both H and F are completed. D will start as soon as both B and C are completed. E will start as soon as D finishes. Which of the following choices is the correct collection of immediate precedence relationships in the project network?

A. H--> B, F--> C, B --> D, C--> D, D--> E, F--> D

B.None of choices

C. H--> B, F--> C, B --> D, C--> E, D--> E, F--> D

D. H--> B, H--> C, B --> D, C--> D, D--> E, D--> F

E. H--> B, H--> C, B --> D, C--> D, D--> E, F--> C

F. H--> B, H--> C, B --> D, C--> D, D--> E, D--> F