Normal Company Pays a Sales Commission of 4% on Each

Multiple Choice

Normal Company pays a sales commission of 4% 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.