Which one of the following is not correct regrading the Copernican heliocentric and a Ptolemaic geocentric universe? Question 31Answer a. The orbits of planets in both Copernican heliocentric model and the Ptolemaic geocentric models were circular. b. The Earth was believed to be located in the worst possible place in the geocentric model as perceived within a Christian framework. c. The retrograde motion of the planets is present in both models. d. Earth is considered a planet in the heliocentric model but this is not the case for the geocentric model. e. The universe perceived in both models is the same size