Norman Company pays a sales commission of 5% on each unit sold. If a graph is prepared, with the vertical axis representing per-unit cost and the horizontal axis representing units sold, how would a line that depicts sales commissions be drawn?
A. As a straight diagonal line, sloping upward to the right.
B. As a straight diagonal line, sloping downward to the right.
C. As a horizontal line.
D. As a vertical line.
E. As a curvilinear line.
Answer: C. As a horizontal line.
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