The orbit of Pluto is much more eccentric than the orbits of the other planets. That is, instead of being nearly circular, the orbit is noticeably elliptical. The point in the orbit nearest to the sun is called the perihelion and the point farthest from the sun is called the aphelion.

At perihelion, the mechanical energy of Pluto’s orbit has

Options

A. its maximum value
B. its minimum value
C. the same value as at every other point in the orbit
D. value which depends on sense of rotation