What is the Earned Value $($EV$)$ in Earned Value Management $($EVM$)?$

Question $6$ options:

Estimate at Completion $($EAC$)$

Actual Cost $($AC$)$

Budgeted Cost of Work Scheduled $($BCWS$)$

Planned Value $($PV$)$

Budgeted Cost of Work Performed $($BCWP$)$