Apersonal trainer designs exercise plans based on a combination of strength-training and aerobic exercise. a beginner plan has 15 minutes per session of strength-training and 20 minutes per session of aerobic exercise for a total of 90 minutes of exercise in a week. an advanced plan has 20 minutes per session of strength-training and 30 minutes of aerobic exercise for a total of 130 minutes of exercise in a week.

which statement describes when the plans are based on the same number of aerobic exercise sessions?

a) each plan utilizes a combination of 2 strength-training sessions and 2 aerobic exercise sessions per week.
b) each plan utilizes a combination of 2 strength-training sessions and 3 aerobic exercise sessions per week.
c) each plan utilizes a combination of 3 strength-training sessions and 2 aerobic exercise sessions per week.
d) each plan utilizes a combination of 3 strength-training sessions and 3 aerobic exercise sessions per week.