Suppose that an astronomy news item announces the discovery of a brown dwarf.What is it that has been discovered?
A) a prestellar object undergoing gravitational collapse
B) a Pluto-like object in the Kuiper belt, beyond the edge of the planetary system
C) an object too large to be a planet but too small to be a star
D) a protostar still embedded in the cloud of gas and dust from which it formed
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