As Material Leaves an Expanding Star and Begins to Fall

Multiple Choice

As material leaves an expanding star and begins to fall into a white dwarf

A) an accretion disk will form around the white dwarf.
B) the material will cool off because it begins to move at high velocities.
C) the material will fall directly onto the surface of the white dwarf.
D) the white dwarf will produce a type-II supernova.
E) the white dwarf's radius will increase.