Nicolaus Copernicus was one of the first scientists to develop and theorize heliocentrism, or the belief that the planets rotate around the Sun. Later, Galileo Galilei argued in favor of Copernicus' beliefs. Although their theory of heliocentrism was correct, what major difficulty did they face when presenting their ideas?
A.
It was impossible to make any theories about the solar system in their time period.
B.
Religious leaders in their time did not accept heliocentrism.
C.
The theory was disorganized and not based upon research or facts.
D.
No other scientists believed or understood their theory.