need help finding the slack. please show how you did it.

Consider the following data for a project to reorganize the office space at Platinum Financial Advisors: Activity Expected Time (weeks) Immediate Predecessor(s) A 3 B 5 2 D 7 B E 4 C D F 6 D 3. Choose the correct network diagram for this project a Finish Finish OD. os Start Finish Start Fin b. Identify the critical path and estimate the projects duration The critical path in path B-D-F and the project duration is 18 wooks (Enter your response as an integer) c. Calculate the stack for each activity. (Enter your responses as integerd) Slack (wooks) Activity A c. Calculate the slack for each activity. (Enter your responses as integers.) Activity A Slack (weeks) B D 7 E F