Where Does the Name Quasar Come From

Where does the name quasar come from?

A) It comes from quasarium, the name given to the new element that was identified with the spectral lines before these were recognized as hydrogen with a very large redshift.
B) It is a contraction of "quasistellar radio source."
C) It is a contraction of "quantum pulsar," the original name.
D) It comes from Alfred