Pop Quiz: What do you think "theory" means in the sense of "the theory of relativity"?

C. A theory that was proved when they took an atomic clock that could Measure time to within 100 millionths of a second and exactlysynchronizedd it with another that was flown both against and with the rotation of the earth. The exactness of the results aligned withEinsteinss theory to within such an accuracy that the theory could not be discarded.