the following is the results of the operations of ABC companies for the month of july:

sales (2,500 units) $7,500

variable costs (3,250)

fixed costs (4,000)

net income $250

what is the effect on net income if ABC sells an additional 500 units monthly?

a) raise by $850

b) raise by $650

c) raise by $500

d) raise by $1,500