Billings Company Has the Following Costs When Producing 100,000 Units $\begin{array}{lr}\text { Variable costs } & \$ 600,000 \\\text { Fixed costs } & 900,000\end{array}$

Multiple Choice

Billings Company has the following costs when producing 100,000 units: $\begin{array}{lr}\text { Variable costs } & \$ 600,000 \\\text { Fixed costs } & 900,000\end{array}$ An outside supplier has offered to make the item at $4.50 a unit.If the decision is made to purchase the item outside, current production facilities could be leased to another company for $165,000.The net increase (decrease) in the net income of accepting the supplier's offer is

A) $285,000.
B) $315,000.
C) $(15,000) .
D) $840,000.