Answer:
Option B. $84 U is the answer.
Explanation:
Petrus Framing's cost formula for its supplies cost is $1,840 per month plus $12 per frame.
Standard supplies cost for the month of March is =
= $9328
But the actual level of activity for the month of March = 631 frames
Therefore, supplies cost on actual frames =
= $9412
The variance is =
= $84 U (option B)