Here is a bar chart of the movie ratings from 2009 to 2013 seen in the pie chart in Exercise 12.

a) Which was the least common rating?
b) An editorial claimed that there's been a growth in PG-13 rated films that, according to the writer, "have too much sex and violence," at the expense of G-rated films that offer "good, clean fun." The writer offered the following bar chart as evidence to support his claim.

Does the bar chart support his claim? Explain.
In Exercise 12