Litchfield Company reported the following results from the sale of 5,000 hammers in May: sales $200,000, variable costs $110,000, fixed costs $60,000, and net income $30,000. Assume that Litchfield 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. 4,500 b. 6,364 c. 4,091 d. 5,000