Lamar Has the Following Data -
If Lamar Produces and Sells 30,000 Units, What Is

Lamar has the following data:
$$\begin{array} { l l } \text { Selling Price } & \$ \quad40 \\\text { Variable manufacturing cost } & \$\quad 22 \\\text { Fixed manufacturing cost } & \$ 150,000 \text { per month } \\\text { Variable selling \& administrative costs } & \$ \quad 6 \\\text { Fixed selling \& administrative costs } & \$ 120,000 \text { per month }\end{array}$$

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If Lamar produces and sells 30,000 units, what is the margin of safety in units?

A) 5,000 units.
B) 7,500 units.
C) 22,500 units.
D) 30,000 units.