Answer:
First, we need to calculate the contribution margin per unit:
Contribution margin per unit = Selling price per unit - Variable cost per unit
Contribution margin per unit = $125 - $90 = $35
Next, we can calculate the sales (in dollars) required to earn a net income of $25,000 after tax:
Sales = (Fixed costs + Desired net income) / (1 - Tax rate)
Sales = ($450,000 + $25,000) / (1 - 0.30)
Sales = $650,000 / 0.70
Sales = $928,571
Therefore, the answer is not listed. The closest answer is B) $674,625, which is the sales required to earn a net income of $10,000 after tax.