Which of the Following Is a Likely Cause of Relatively

Which of the following is a likely cause of relatively long gamma-ray bursts?

A) material ejected at high speeds along the poles of a collapsing massive star
B) radiation from material heated to high temperatures in a black hole's accretion disk
C) an explosion of a white dwarf as its mass reaches the Chandrasekhar limit
D) explosions of very massive stars within the disk of the Milky Way Galaxy