(a) Develop a project network. (b) Develop an activity schedule. (c) What are the critical activities? (Enter your answers as a comma-separated list.) What is the expected project completion time (in weeks)? weeks (A,B,C,D,E)=( (e) Develop an activity schedule for the crashed project. (f) What added project cost (in thousands of dollars) is required to meet the six-month completion time? thousands of dollars