What Use Did Tycho Brahe Make of Parallax in His

Multiple Choice

What use did Tycho Brahe make of parallax in his observations?

A) Tycho did not attempt to measure parallax because he knew it applied only to heliocentric systems-and he believed that the solar system was geocentric.
B) Tycho did not attempt to measure parallax because he knew it applied only to geocentric systems-and he believed that the solar system was heliocentric.
C) Tycho successfully measured parallax for the supernova of 1572 and the comet of 1577.
D) Tycho tried but failed to measure parallax for the stars.