If Its Ion Engine Operates as Planned, Its Huge Solar

Multiple Choice

If its ion engine operates as planned, its huge solar panel remains deployed and undamaged, and its xenon energy source is not exhausted, then the Dawn spacecraft will reach both Vesta and Ceres (large asteroids in the belt between Mars and Jupiter) , and scientists will gather information about the formation of planets, whether Ceres has a buried ocean of fresh water, and whether vestiges of life lurk beneath its icy surface.

A) Argument; conclusion: Its ion engine operates ... not exhausted.
B) Argument; conclusion: The Dawn spacecraft ... Mars and Jupiter)
C) Argument; conclusion: The Dawn spacecraft ... beneath its icy surface.
D) Argument; conclusion: Scientists will gather information ... formation of planets.
E) Nonargument.