Solve for the Missing Piece of Information for Each of the Following

Solve for the missing piece of information for each of the following independent situations:
$\begin{array}{lllll} \underline { Account }& \underline { \text { CASE A} } & \underline{ \text { CASE B}} & \underline{ \text { CASE C}} & \underline{ \text { CASE D}}\\\text { Raw materials } & \$ 1,000 & \$ 400 & \$ 300 & \$ 200 \\\text { Cost of completed units } & 3,200 & 2,200 & \mathbf{C} & 1,500 \\\text { Manufacturing overhead } & 400 & \mathbf{B} & 300 & 100 \\\text { Ending work in process } & 1,200 & 800 & 400 & \mathbf{ D } \\\text { Direct labor costs } & 2,200 & 1,000 & 100 & 1,000 \\\text { Beginning work in process } & \mathbf{A} & 750 & 700 & 400\end{array}$