3. Nilai University is planning to install a new computerized accounts system. The management has determined the activities required to complete the project, the precedence relationships of the activities, and activity time estimates as in Table Q3 Table Q3 Activity Description Activity predecessor Time duration (week) A 8 B 12 7 D A 8 E B,C Position recruiting System development System training Equipment training Manual system test Preliminary system changeover Computer personnel interface Equipment modification Equipment testing System debugging F F B,C G DE 6 H DE 2 H F G N 2 a. (6 MARKS) Construct the network for this project; b. Earliest start and finish times (ES and EF for each activity); (4 MARKS) (4 MARKS) c. Latest start and finish times (LS and LF) for each activity: d. Slack for each activity; (3 MARKS) e. Critical path; (2 MARKS) f. Expected project completion time. (1 MARKS)