An asteroid orbits the Sun in an elliptical orbit that has the same semi-major axis as the Earth's orbit. Which of the following statements about this asteroid is correct?
a.The asteroid must be moving fastest when it is closest to the Sun.
b.The asteroid's orbit must be less eccentric than that of the Earth.
c.The asteroid must be moving fastest when it is closest to the Earth.
d.The asteroid's orbit must be more eccentric than that of the Earth.