Not Only Does the Central Engine of Active Galaxies and Quasars

Multiple Choice

Not only does the central engine of active galaxies and quasars require a black hole, but also to provide the radiative energy.

A) a high rate of rotation for the black hole
B) an accretion disk of infalling matter
C) a very strong magnetic field from neutron stars
D) globular clusters for food
E) a source of high- energy electrons for synchrotron radiation