NEED HELP WITH C & D PLEASE

Problem 13-7 (LO 13-6) Construction of a building is... Construction of a building is based on the following CPM network: Draw the network and answer the following questions. a. What are the normal project completion time and normal cost? This can be accomplished most effectively by crashing any one of which three activities below? (You may select more than one answer. Single click the box with the question mark to produce a check mark for a correct answer and double click the box with the question mark to empty the box for a wrong answer.) ? A ? B ? c ? D ? E ? F (3) d. What is the minimum time for project completion? b. Identify the critical path. (You may select more than one answer. Single click the box with the question mark to produce a check mark for a correct answer and double click the box with the question mark to empty the box for a wrong answer.) A-B-C-F-GA-D-F-GA-B-E-GA-C-F-GA-D-G c. How much additional cost is needed to crash the project by one day