Which of the following statements is not correct concerning multiple overhead rate systems?

A multiple overhead rate system is more complex than a system based on a single plantwide overhead rate.

A multiple overhead rate system is usually more accurate than a system based on a single plantwide overhead rate.

A company may choose to create a separate overhead rate for each of its production departments.

In departments that are relatively labor-intensive, their overhead costs should be applied to jobs based on machine-hours rather than on direct labor-hours.