Chipper Corporation Realized $1,000,000 Taxable Income from the Sales of Its

Chipper Corporation realized $1,000,000 taxable income from the sales of its products in States X and Z. Chipper's activities establish nexus for income tax purposes only in Z, the state of its incorporation. Chipper's sales, payroll, and property among the states include the following.
$\begin{array}{lrrr} & \text { State X } & \text { State Z } & \text { Totals } \\\text { Sales } & \$ 1,000,000 & \$ 2,000,000 & \$ 3,000,000 \\\text { Property } & 200,000 & 2,300,000 & 2,500,000 \\\text { Payroll } & 100,000 & 1,900,000 & 2,000,000\end{array}$
X utilizes a sales­only factor in its three­factor apportionment formula. How much of Chipper's taxable income is
Apportioned to X?

A) $0.
B) $333,333.
C) $500,000.
D) $1,000,000.