Activity Mary is planning her wedding and develops the following preliminary information. Estimated Normal Time Immediate Predecessor A (select wedding date) none 3 weeks B (select wedding location) none 4 weeks C (guest list, whose attending) A, B 4 weeks D (select entertainment) A 3 weeks E (choose catering) A, C 2 weeks F (wedding day) D, E O weeks a. Draw the network for this project. What is the critical path(s)? b. What is the project completion time? d. What activity has the most slack?​