QUESTION 18 The table below shows some data for Key Biscuit Company Tax Interest ROS ATO Leverage ROE Burden Burden Year 2010 O 60 O 70 O 40 0.45 1.20 9.07% 2011 0.60 0.55 0.40 0.45 1.45 8.61% 2012 0.60 0.45 0.40 0.45 1.65 8.02% What must have caused the firm's ROE to drop? OA The firm began using more debt as a percentage of financing OB. The firm began using less debt as a percentage of financing C. The compound leverage ratio was less than 1 O D. The operating ROA was declining