Observationally, the Biggest Difference Between Quasars and Other Active Galaxies

Observationally, the biggest difference between quasars and other active galaxies such as Seyferts and radio galaxies appears to be that:

A) Seyferts and radio galaxies have bright nuclei, but do not have ejected jets of material from their nuclei.
B) quasars appear to be located inside elliptical galaxies, whereas Seyferts and radio galaxies are all inside spirals.
C) Seyferts and radio galaxies do not have the bright, starlike nuclei of quasars.
D) Seyferts and radio galaxies are less powerful than quasars.