Lee made a model of the solar system using common objects to represent Earth, the Moon, the Sun, and the planet Jupiter. For her model she used a basketball, a baseball, a Ping-Pong ball, and a marble. Based on the relative sizes of these objects, which of the following represents Earth in Lee's model?

A.

the basketball
B.

the baseball
C.

the Ping-Pong ball
D.

the marble