Consider the following information for a project to add a drive-thru window at Crestview Bank. Activity Activity Time (weeks) Immediate Predecessor(s) A 5 - B 2 - C 6 - D 2 A, B E 7 B F 3 D, C G 9 E, C H 11 F, G a. Draw the network diagram for this project. b. Specify the critical path. c. Calculate the slack for activities A and D