Where Are the X-Rays Produced That Are Emitted by Quasars

Where are the X-rays produced that are emitted by quasars and other active galactic nuclei?

A) in hot gas in an accretion disk around a central black hole
B) in ionization nebulae of interstellar gas that surround the accretion disk
C) in dust grains in molecular clouds that encircle the active galactic nucleus
D) in fast-moving electrons that jet from the active galactic nucleus
E) all of the above

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