In Fiscal year 2018, Firm A had a revenue of 12.42M, gross profit of 7.46M, and net income of 4.84M. Firm B had a gross profit margin of 54%, Revenues for 66.7M and its difference between gross profit and net profit was 38.7M. Which firm was more profitable in 2018? (Hint: Calculate the net profit margin for firm A)