a. Choose the correct network diagram below for this project. A. B. c. D. b. Determine the project's critical path and duration. The critical path is and the project duration is day(s). (Enter your response as a whole number.) c. What is the slack for each activity? \begin{tabular}{ccc} \hline Activity & Activity Time (days) & Slack (days) \\ \hline A & 1 & \\ B & 7 & \\ C & 2 & \\ D & 7 & \\ E & 8 & \\ F & 3 & \\ G & 4 & \\ H & 1 & \\ \hline \end{tabular}