Which of the Following Individuals Experiences the Highest Calorie Cost

Which of the following individuals experiences the highest calorie cost?

A) Sara, who weighs 145 lbs., and does step aerobics (0.062 cal\lb.\min) for 35 minutes
B) Ben, who weighs 180 lbs., and walks on the treadmill (0.048 cal\lb.\min) for 25 minutes
C) Mary, who weighs 120 lbs., and rides her bike (0.076 cal\lb.\min) for 20 minutes
D) Andrew, who weighs 163 lbs., and swims (0.058 cal\lb.\min) for 30 minutes
E) Kia, who weighs 185 lbs., and runs on the treadmill (0.061cal\lb.\min) for 25 minutes