Amila is examining the monthly returns of various stocks. She would like to compare the underlying distributions of the stocks visually and has decided to use multiple histograms for this purpose. She is however worried that it is difficult to compare the distributions of two stocks that are not next to each other on the plot. She also needs to add 5 more stocks to the plot and she is worried it will become cluttered. Can you suggest an alternative plot for Amila to use