On the Line in Front of Each Statement,enter the Letter

On the line in front of each statement,enter the letter corresponding to the term that best fits that statement.You may use a letter more than once and some letters may not be used at all.
$$\begin{array} { | l | l | l | l | } \hline \text { A. } & \text { Direct costs } & \text { F. } & \text { Variable costs } \\\hline \text { B. } & \text { Marpinal cost } & \text { G. } & \text { Indirect cost } \\\hline \text { C. } & \text { Average cost } & \text { H. } & \text { Surk cost } \\\hline \text { D. } & \text { Conversion costs } & \text { I. } & \text { Differential cost } \\\hline \text { E. } & \text { Prine costs } & & \\\hline\end{array}$$ ___ The combination of direct materials and direct labor
___ Costs that change in total in direct proportion to changes in volume
___ A cost that relates to the cost object,but cannot be traced to it
___ A cost that has already been incurred