What are the two main types of satellites used in communication?

Question $42$ options:

Polar Orbiting and Low$-$Earth Orbiting

Low$-$Earth Orbiting and High$-$Earth Orbiting

Medium$-$Earth Orbiting and Geostationary

Geostationary and Medium$-$Earth Orbiting

Geostationary and Polar Orbiting

Low$-$Earth Orbiting $($LEO$)$ and Geostationary