Kepler's Third Law Tells Us That The

Kepler's third law tells us that the:

A) period of a planet in years is the same number as its semimajor axis in AU.
B) square of a planet's period in years is the same number as the cube of its semimajor axis in AU.
C) square of a planet's period in years is the same number as the fourth power of its semimajor axis in AU.
D) cube of a planet's period in years is the same number as the square of its semimajor axis in AU.