On the Basis of Galactic Motions in the Local Group,what

Multiple Choice

On the basis of galactic motions in the Local Group,what is likely to happen to the Milky Way within the next 6 to 8 billion years?

A) It will slowly condense under the action of the central supermassive black hole,causing its spin rate to increase,winding its spiral arms tighter until it becomes an elliptical galaxy.
B) Gravitational forces from neighboring galaxies will slow its rotation,allowing the spiral arms to straighten and eventually dissipate into intergalactic space.
C) It will collide with the Andromeda Galaxy and thereby trigger intense new star birth in gas and dust clouds.
D) It will repel from the Andromeda Galaxy and get increasingly farther away from all of the other dwarf galaxies as well.