Answer:
The correct answer is $27 U'.
Explanation:
The activity variance for supplies cost in March is calculated below:
Activity variance = Planning Budget - Flexible budget
Activity variance = (1,710 + (9 x 611)) — (1,710 + (8 x 614))
Activity variance = $7,209 — $7,236
Activity variance = $27U
The flexible budget is higher than the planning budget.
Thus, the variance is unfavorable (U).
Hence, the correct answer is $27 U'.