Computing and Interpreting Financial Statement Ratios Following are selected ratios of Norfolk Southern for 2018 and 201 1'. Return on Assets (RCA) Component 201B 201? Profitability {Net incomEJ'Salesl 23.3% 51.2% Productivity{Saleszverageassetsl 0.318 0.299 a. Was the company profitable in 2018? ' T b. Was the company more profitable in 2018 or 201?? ' v c. Is the change in productivity a positive or negative development? {1. Compute the company's RDA for 2018 and for 2017'. Note: Round answers to one decimal places (example: 10.4%). 2018 0% 2017' 0% e. From the information provided, which of the following best explains the change in RDA during 2018? 0