For this question, we will use austres dataset that is available in the package. Using R, plot the time series in the following ways

a) Plot the time series

b) Decompose the series into its seasonal, trend and irregular components and plot the result in one graph.

c) Determine whether the data is autocorrelated and justify your answer

d) Plot the differences between successive data values For all graphs, use labels as appropriate.

Submit the documented source code and screen shots for your graphs. Use color schemes that are appropriate for users suffering from red-green color blindness.