Marquardt Corporation Realized $900,000 Taxable Income from the Sales of Its

Marquardt Corporation realized $900,000 taxable income from the sales of its products in States X and Z. Marquardt's activities establish nexus for income tax purposes in both states. Marquardt's sales, payroll, and property among the states include the following. $\begin{array}{ccc}&\text { StateX } & \text { State Z } & \text { Totals } \\\text { Sales } & \$ 1,000,000 & \$ 3,000,000 & \$ 4,000,000 \\\text { Property } & 2,000,000 & -0- & 2,000,000 \\\text { Payroll } & 1,000,000 & -0- & 1,000,000\end{array}$ Z utilizes an equally weighted three-factor apportionment formula. Marquardt is incorporated in X. How much of Marquardt's taxable income is apportioned to Z?

A) $0
B) $225,000
C) $675,000
D) $3,000,000