Answer:
Answer B.
Step-by-step explanation:
Flexible budget adjust or changes with changes in business activity. It is more sophisticated and useful than the static budget. For those parts of the equation that are variable, the budget itself will change while fixed parts will stay the same. Therefore if the actual amount of working hours was 90,000 and the cost function is 16$*90,000 + 640,000$, than the flexible budget is 2,080,000 dollars.