(a) Develop a project network: (D) Develop an activer schedule. (c) What are the critical activies? (Enter your answen as a comma-separated lis.) What is the expected project completion sime (in meeisis)? necks (A,B,C,D,D)= (e) Develun an artivilv schedule for the crashed project. (e) Develop an activity schedule for the crashed project. (f) What addediproject cost (in thousands of dollars) is required to meet the six-month completion time? thousands of dollars