The maximum and minimum distances of a comet from the sun are added to 25 × 10¹². If its velocity when near to the sun is 60 m/s, what is the kinetic energy of the comet?

a) 9 × 10¹¹ J
b) 1.8 × 10¹² J
c) 3.6 × 10¹² J
d) 7.2 × 10¹² J