Main-Sequence Stars Apparently Are Not Larger Than a Few Hundred

Main-sequence stars apparently are not larger than a few hundred solar masses. The reason stars of larger mass do NOT exist is that

A) their temperatures becomes so high that their outer envelopes are expelled by the pressure of radiation inside them.
B) the thermonuclear reactions in such stars proceed so rapidly that the stars explode.
C) such stars contract directly to become planetlike objects.
D) interstellar clouds of greater mass break up to become binary or multiple-star systems, not single stars.