The residual plot for a data set is shown. based on the residual plot, which statement best explains whether the regression line is a good model for the data set and why? a) the regression line is a good model because there is no pattern in the residuals. b) the regression line is a good model because no residuals are 0. c) the regression line is not a good model because some points in the residual plot are far from the x-axis. d) the regression line is not a good model because no points in the residual plot are on the x-axis.