Some Quasars Show Absorption Spectra with a Smaller Redshift Than

Multiple Choice

Some quasars show absorption spectra with a smaller redshift than their emission spectra;this indicates that:

A) we still don't understand redshifts.
B) they are much closer than previously thought.
C) there is cooler gas between us and the quasar.
D) their black holes are still contracting.
E) their black holes are still expanding.