Red's Tractors Owes $52,311 in Taxes on a Taxable Income

Red's Tractors owes $52,311 in taxes on a taxable income of $608,606.The company has determined that it will owe $56,211 in tax if its taxable income rises to $620,424.What is the marginal tax rate at this level of income?

A) 39 percent
B) 38 percent
C) 35 percent
D) 34 percent
E) 33 percent