Tycho Brahe Set Out to Disprove Copernicus, So Why Is

Tycho Brahe set out to disprove Copernicus, so why is he famous for developing modern astronomical theory?

A) Although he set out to disprove Copernicus, he ultimately accepted Copernicus' theory and was executed by the inquisition.
B) He theorized the concept of gravity with no data, which was left undiscovered until Newton.
C) He made very precise measurements that were key data used by Kepler.
D) None of these is correct.