Calculate the missing information for each of the following independent cases:

$\backslash$table$[[$Cases$,\backslash$table$[[$Beginning$],[$Inventory$]],$Purchases,$\backslash$table$[[$Cost of$],[$Goods Sold$]],\backslash$table$[[$Ending$],[$Inventory$],[($perpetual$],[$system$)]],\backslash$table$[[$Ending$],[$Inventory$],[($as$],[$counted$)]],$Shrinkage$],[$A$,138,795,357,,515,],[$B$,390,1,180,,245,245,],[$C$,340,880,390,830,,15],[$D$,355,,840,400,295,]]$