when you add a forecasting line what is the function of the two bands around the right end of the forecasting line. choose the best answer. a$.$ they show you the strength of the forecast by varying the band colors similar to a heat map b$.$ they show you various direction the forcasting line might be expected to take c$.$ they show you the range of potential values thay fall within the $95\%$ confidecne interval d$.$ they show you previous forecasting line that have been right $95\%$ of the time