What type of model did Copernicus propose for the solar system?
O A) elliptical
O B) retrograde
O O geocentric
O D) heliocentric
![What type of model did Copernicus propose for the solar systemO A ellipticalO B retrogradeO O geocentricO D heliocentric class=](https://us-static.z-dn.net/files/df2/720f6a48f557425435f244305854aab6.jpg)