Bramble Corp. reported the following results from the sale of 5600 hammers in May: sales $224000, variable costs $134400, fixed costs $60000, and net income $29600. Assume that Bramble increases the selling price of hammers by 10% on June 1. How many hammers will have to be sold in June to maintain the same level of net income?

a 4480

b 5600

c 4734

d 5091