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【单选题】
All of the following statements regarding profit margin are 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.
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