Nartey-Junior Ltd is considering employing some HR workers to undergo a series of exercises summarized into the following activities. ACTIVITY PRECEEDING ACTIVITY DURATION (Days) A: Recruitment exercise 12 B: Selection exercise A 10 20 C: Interviews A 4 D: Orientation C 3 E: On the job D 5 F: First Promotion B, E 4 G: In service staff training F 5 H: Overseas Staff F 3 I: Second Promotion H 15 J: Staff development K: Staff career appraisal G, I j 12 3 a. Explain critical path analysis b. Draw the project network analysis c. Determine the critical path