Two English classes with the same number of students took a final exam. The box-and-whisker plots above summarize the test scores for each class. Use the box-and-whisker plots to answer the questions.

a) Which class had the highest test score?
b) Which class had test scores with a larger interquartile range (IQR)?
c) Which class had a higher median test score?
d) Which class had a smaller range of test scores?