The plantwide overhead rate method can be based on each of the following except

direct labor hours

machine hours

supervisor hours

The basic principle of activity$-$based costing is that a$($n$)$ is what causes overhead cost to be incurred.

The basic principle of activity$-$based costing is that a$($n$)$ is what causes overhead cost to be incurred.

The basic principle of activity$-$based costing is that a$($n$)$ is what causes overhead cost to be incurred.

The basic principle of activity$-$based costing is that a$($n$)$ is what causes overhead cost to be incurred.

The basic principle of activity$-$based costing is that a$($n$)$ is what causes overhead cost to be incurred.