Answer:
D $25,060
Step-by-step explanation:
I may be wrong, but "A flexible budget is a budget that adjusts or flexes with changes in volume or activity"
Since they planned to use $8 x 1,510 units=$12,080
But used $14 × 1,790 units = $25,060
Their "flexible budget" changed from $12,080 to $25,060.