All of the following statements regarding profit margin is true except
A.
Profit margin reflects the percent of profit in each dollar of revenue.
B.
Profit margin is also called return on sales.
C.
Profit margin can be used to compare a firm's performance to its competitors.
D.
Profit margin is calculated by dividing net income by net sales.
E.
Profit margin is not a useful measure of a company’s operating results.