Answer:
e. $150,000 fixed and $102,500 variable.
Step-by-step explanation:
fixed costs do not vary with output, so the fixed costs must be the same for both budgets = $150,000 (doesn't matter if production is 12,000 or 10,000 or 8,000, or 15,000 units)
variable costs per unit = $123,000 / 12,000 = $10.25
variable costs for flexible budget (10,000 units) = $10.25 x 10,000 = $102,500