Code in Python:

10 users were asked to select from four options (A, B, C and D). Their responses are stored in the variable x below.

x = pd.Series(["A" , "B", "A", "A", "D", "C", "A", "C", "A", "A"])

Use the data in x to plot a pie chart representing the counts for each of the 4 options.

This can be done by:

- Counting the number of occurrences of each option and storing it into a DataFrame.

- Invoking the plot method in Pandas with pie option on the DataFrame, indicating that your y value is the counts column.