Question: Student A has a resting heart rate of 60 BPM and an SV of 0.1 L/min. Student B has a resting heart rate of 90 BPM and an SV of 0.05 L/min. Both students run up and down two flights of stairs for 1 minute. Their heart rates have now doubled and their SV has increased 1.5 fold. What is the fold difference between the CO of Student A and Student B?