The box plots below show the distribution of salaries, in thousands, among employees of two small companies.

A box plot titled Salaries in Dollars at Company 1. The number line goes from 25 to 80. The whiskers range from 25 to 80, and the box ranges from 26 to 34. A line divides the box at 30.
Salaries in Dollars at Company 1

A box plot titled Salaries in Dollars at Company 2. The number line goes from 35 to 90. The whiskers range from 36 to 90, and the box ranges from 38 to 44. A line divides the box at 40.
Salaries in Dollars at Company 2

Which measures of center and variability would be best to use when making comparisons of the two data sets?
mean and MAD
mean and IQR
median and MAD
median and IQR