Based on the activity description below, answer the following four questions. Notes: - Remove any redundant dependencies -Draw to scale 1. Activity I follows Activity B and precedes Activity O 2. Activity B must be completed before work on last 4 days of activity R can start. 3. Activity S follows Activity R and precedes Activity P. 4. Activity Y preceded by Activities X, L, and Z, and followed by Activities G and F. 5. Activity W precedes Activities A, X, L, and Z 6. Activity B can start after 2 days of starting activity A and completion of Activity X. 7. Activity E follows Activities L and W and followed by Activities N and K. 8. Activity K depends on Activities N, R, and L. 9. Activity P follows Activities R and N. 10. Activities X, F, and W followed by Activity S. N G IK 2 N POR SW X Y Activity ID A B E F Duration 12 6 2 10 4 (days) 8 16 2 6 6 4 8 | 10 12 2 84 | 10 a. b. Draw the bar (Gantt) chart (4 marks). Determine the project duration (1 mark). Activity K can start on day --- ------ (1 mark) Draw an Activity-on-Node network diagram (4 marks) C. d