If the Entirety of a Collapsing Interstellar Cloud Went into Forming

Multiple Choice

If the entirety of a collapsing interstellar cloud went into forming a single protostar,

A) the forming protostar would be significantly less massive than it would have been otherwise.
B) the forming protostar would be rotating too fast to hold itself together.
C) the protostar would eventually capture free-floating planets to form a normal planetary system.
D) the protostar would be too massive to hold itself together, and would explode before becoming a star.
E) the protostar would become so massive that it would collapse into a black hole.