The authors believe that Pluto should be called a planet because Pluto has enough gravity to create a round structure.
Which answer choice explains how the International Astronomical Union's perspective is different?
A
The IAU believes Pluto is not a planet because it has not pushed out the debris that surrounds it in orbit.
B
The IAU believes Pluto is not a planet because it is only 17 miles long.
C
The IAU believes Pluto is not a planet because the surface of the planet is lumpy due to a lack of gravitational force.
D
The IAU believes that Pluto is not a planet because it has no other objects orbiting nearby.
A
The IAU believes Pluto is not a planet because it has not pushed out the debris that surrounds it in orbit.