Students performed a stair-climbing experiment to investigate the power output of the human body. Each student climbed the stairs in a sports stadium to different heights while another student used a stopwatch to time the climb. The body mass, time, and
vertical height reached by four students is given in the table. (Estimate g as 10 m/s2)
Which two students generated the same amount of power?

A)Toshiko and Gwynn

B)Gwynn and Johanna
C) Rydell and Toshiko

D) Johanna and Rydell