A network of for profit regional hospitals in the miswest recently reviewed its statement of operations. vis vertical common size analysis. Its year over year comparison saw an increase in total operation expenses as a percent of total operating revenue from 90.3 % to 97.3% What problem could this observation present considering the regional hospitals current financial scenerio? 1) that is justifies the need to lower wages payable. 2) that it determines that percentage increase in net patient revenues 3) that it provides further evidence to explain the decrease in operating income. 4) that it gives into the increase in operating margin. Please explain the answer in detail. Thank you!