An Astronomical Unit Represents the Average Distance from the

Multiple Choice

An astronomical unit represents the average distance from the

A) center of Earth to the center of the Sun and equals about 150 million km (93 million miles) .
B) surface of Earth to the surface of the Sun and equals about 1,000 million km (621 million miles) .
C) center of Earth to the center of the Sun and equals about 1,000 million km (621 million miles) .
D) surface of Earth to the surface of the Sun and equals about 150 million km (93 million miles) .