A project has seven activities: A, B, C, D, E, F, and G. Activities A, B, and D can start anytime. Activity A takes 3 weeks, Activity B takes 5 weeks, and Activity D takes 11 weeks. Activities A and B must be completed before Activity C can start. Activity C requires 6 weeks to complete. Activities B, C, and D must be completed before Activity E can start. Activity E requires 2 weeks. Activity F takes 4 weeks and can start as soon as Activity C is completed. Activity E must be completed before Activity G starts. Activity G requires 3 weeks. Activities F and G must be completed for the project to be completed.

Which activities have float available?