Which of the following signified that a new theory was established?
A.
The general theory of relativity makes more accurate prediction of the motion of Mercury than the theory of gravity.
B.
It is much simpler to work with the theory of gravity than with the general theory of relativity.
C.
The general theory of relativity evolved from the theory of gravity.
D.
The general theory of relativity is used for scientific research while the theory of gravity is used for all practical purposes.