A newly developed drug is tested to detemine absorption levels in a patient's bloodstream. A patient is injected with the drug and the concentration (units/cc) in the patient's blood is measured every hour for seven hours. Below is the output from fitting a linear regression model. Which of the following statement is true? I. The linear model is appropriate given that it explains 90% of the variability in blood concentration levels of the drug. II. If the observed pattem continues into the future, this model will underestimate the concentration level after 10 hours has elapsed because the linear model is not appropriate. III. If the observed pattem continues into the future, this model will overestimate the concentration level after 10 hours has elapsed because the linear model is not appropriate. Click the icon to view the regression output. Click the icon to view the scatterplot. DA. III only OB. Both I and III More Info Oc. I only OD. II only Scatterplot of Concentration vs Time Elapsed (Hours) OE. Both I and II 40- More Info 30 Regression Analysis: Concentration versus Time Elapsed 2 The regression equation is Concentration = 41.3 - 6.00 Time Elapsed 10- Predictor Coef SE Coef T P Constant 41.286 3.990 10.35 0.000 0- Time Elapsed -6.0000 0.8921 -6.73 0.001 S = 4.72077 R-Sq = 90.0% Time Elapsed (Hours) Concentration