Parallax Requires the Observation of a Distant Object from Two

Parallax requires the observation of a distant object from two different positions. How did Tycho Brahe accomplish this?

A) He developed a network of observers throughout Europe who were all instructed to make simultaneous observations on certain dates.
B) Knowing that any change would take a long time, he himself would make observations from different cities a few days apart.
C) He remained at one location and allowed the rotation of Earth over the course of a single night to shift his observation position with respect to the distant stars.
D) He remained at one location and allowed the motion of Earth in its orbit over the course of a few weeks to shift his observation position with respect to the distant stars.