ABC Corp. invests in a project with the following annual information: Fixed costs of $3,920, a depreciation of $1,050 and sales revenue of $22,800. Variable costs are 56.70% of sales revenue. If sales revenue increase by 5.70%, by what percentage will pre-tax profits increase?

a. 9.45%

b. 6.38%

c. 4.25%

d. 17.22%

e. 11.48%