Answer the Following Questions Using the Information Below

Answer the following questions using the information below:
Bush Manufacturing produces a single product that sells for $100. Variable costs per unit equal $25. The company expects total fixed costs to be $60,000 for the next month at the projected sales level of 1,000 units. In an attempt to improve performance, management is considering a number of alternative actions. Each situation is to be evaluated separately.
-Suppose that management believes that a $24,000 increase in the monthly advertising expense will result in a considerable increase in sales. Sales must increase by how much to justify this additional expenditure?

A) 320 units
B) 1,120 units
C) 240 units
D) None of these answers are correct.