For each of the following independent cases $($A$-$D$),$ compute the missing value in the table.

$\backslash$table$[[$Case$,$Beginning Units,Units Started,Units Completed,Ending Units$],[$A$,440,2,450,1,480,],[$B$,1,330,820,,1,460],[$C$,,710,1,400,2,710],[$D$,300,,1,000,750]]$