Which of the following would produce a materials price variance? A. an excess quantity of materials used. B. an excess number of direct labor-hours worked in completing a job. C. shipping materials to...

Which of the following would produce a materials price variance?

A. an excess quantity of materials used.
B. an excess number of direct labor-hours worked in completing a job.
C. shipping materials to the plant by air freight rather than by truck.
D. breakage of materials in production.