I know the right answer but WHY is it the right answer?

You are the project manager of a $1200$ foot ocean pier construction project. The project management plan required that you complete the project in $60$ weeks at a cost of $$5000$ per linear foot. After the $24$th week, the project analyst reports that the project's EV is $$2,400,000$ and the total cost to date is $$2,000,000.$ If you assume that you will continue to spend at the same rate, what is the estimate to complete?

A$.$ $$3,300,000$

B$.$ $$5,000,000$

C$.$ $$3,000,000-$ This is the right answer but why is it the right answer?

D$.$ $$3,900,000$