$($c$).$ What is the difference between cost reporting and cost control?

$2.$ A project consists of three tasks. Task A is scheduled to begin at the start of Week $1$ and finish at end of Week $3.$ Task B is scheduled to begin at the start of Week $1$ and finish at the end of Week $2.C$ is scheduled to begin at the start of Week $2$ and end at the end of Week $3.$ The budgeted cost for A is $$24,000,$ for Task B is $$18,000,$ and for Task C is $$17,000.$ At the end of the second week, Tas is $75\%$ complete, Task B is $85\%$ complete, and Task C is $80\%$ complete.

a$.$ What is the budgeted cost of work scheduled?

b$.$ What is the budget cost of the work performed?

c$.$ What is the schedule performance index of the project at the end of the second week?