Answer:
Option c.Ratio of operating income to sales
That is the ratio of incomes from operation to sale
Explanation:
profit margin is said to be the Net income/net sales
There are two types of profit margins which are the Gross profit margin and net profit margin.
gross profit margin handle the fraction of every amount of money spent by customers that do not go towards making the product while the net profit margin handle the area of every amount spent by customers that the company gets
