The Specific Characteristics That Identify MOST Quasars Are

The specific characteristics that identify MOST quasars are

A) that they look like elliptical galaxies but with high spectral redshifts.
B) luminous, starlike appearance, and very high spectral blueshift, indicating that they are approaching the Sun very fast, and rapid intensity fluctuations, indicating small intrinsic size.
C) luminous, starlike appearance with very high redshifts and hence very large distances, indicating very energetic sources.
D) spiral galaxy appearance and very high spectral blueshift, indicating that they are coming toward the Sun at high speed.