1. Which of the following calculations is correct if sales are $125,000, operating profit after tax is $10,000, the tax rate is 30%, there are no other comprehensive income items, operating liabilities (OL) are $15,000, the short-term borrowing rate (STBC) is 3% after tax, and the asset turnover ratio (ATO) is 2.5?

   	1.	ROOA = 0.1608
   	2.	RNOA = 0.1889
   	3.	OLLEV = 0.2502
   	4.	operating profit margin = 0.1250