Carbonaceous Meteorites Are Believed to Come From

Multiple Choice

Carbonaceous meteorites are believed to come from:

A) coal formed on Mars, then blown into space by asteroid impacts.
B) the core of a differentiated type M asteroid, now broken up.
C) the crust of a differentiated C type asteroid, now broken up.
D) a broken up cometary nucleus, dark like Comet Halley's nucleus.
E) deep space, far beyond the solar system, hence their very low density.