TB MC Qu$.14-36($Static$)$ For a direct material, which one of the $...$

For a direct material, which one of the following is defined as the difference between the actual and standard unit price of the direct material $n$ by the actual quantity of the material purchased?

Multiple Choice

Direct materials volume variance.

Direct materials purchase$-$mix variance.

Direct materials flexible$-$budget variance.

Direct materials purchase$-$price variance.