In Example 3, does it make any difference in which order the selection operations are performed? That is, if we select a jacket color first and then select a size, are there as many combined choices available as selecting a size first and then a color? Justify your answer using tree diagrams and the multiplication principle.

Data from Example 3

A retail store stocks windbreaker jackets in small, medium, large, and extra large. All are available in blue or red. What are the combined choices, and how many combined choices are there?