Select the correct answer. The formula to find the period of orbit of a satellite around a planet is T 2 = ( 4 ⁢ π 2 G ⁢ M ) ⁢ r 3 where r is the orbit’s mean radius, M is the mass of the planet, and G is the universal gravitational constant. If you are given all the values except r, how do you rewrite the formula to solve for r? A. r = G ⁢ M ⁢ T 4 ⁢ π 2 3 B. r = T 2 ⁢ π ⁢ G ⁢ M 3 C. r = G ⁢ M ⁢ T 2 4 ⁢ π 2 3 D.