Question $20(5$ points$)$

$\backslash$table$[[$Net Credit Sales,$500,000],[$Cost of Goods Sold,$300,000],[$Operating expenses,$75,000],[$interest and other expenses,$25,000],[,],[$Inventory at beginning of year,$38,356],[$Inventory at end of year,$43,836],[,],[$Stock price,$5],[$Weighted average number of shares,$500,000]]$

Using the above information, what is the gross profit margin?

$40\%$

$25\%$

$20\%$

$60\%$