Please give me answer

What is the critical path for this project? What is the total time required to complete the project? Start A 0 D F D 0 3 C UN B E G H O IN LA 2 IN 5 O (a) Critical Path: Start -> B -> E -> G -> H, (b) Total time require: 21 Weeks. O (a) Critical Path: Start -> A -> D -> F -> H, (b) Total time require: 21 Weeks. O (a) Critical Path: Start -> B -> C -> D -> F -> H, (b) Total time require: 15 Weeks. O (a) Critical Path: Start -> A -> E -> G -> H, (b) Total time require: 21 Weeks. O (a) Critical Path: Start -> B -> C -> D -> F -> H. (b) Total time require: 21 Weeks