please answer it according to Construction Management.

Example Table shows a Gantt Chart of a project in progress. The weekly cost for activities A, B and Care RM 2,500, RM 1,500 and RM 900 respectively. Time (Weeks) 6 7 Activity 11 9 8 10 1 2 3 5 4 em 2500 A Rm 1500 B B Rm 900 Legend: Budgeted Remaining Works Completed (a) Determine the cumulative budgeted cost at the end of week 7. (b) Determine the cumulative actual cost at the end of week 7. Determine whether there is a cost overrun or underrun and explain the cause. (c) Calculate the Cost Performance Index at the end of week 7. Based on the value of the Cost Performance Index, explain the situation of the project and recommend actions that needed to be taken under this situation. (d) Calculate the Schedule Performance Index at the end of week 7. Based on the value of the Schedule Performance Index, explain the situation of the project and recommend actions that need to be taken under this situation