Two Conducting Spheres Are Made of the Same Material and Have

Multiple Choice

Two conducting spheres are made of the same material and have radii r and 2r. The spheres are placed a distance d > 3r from each other and have initial charges of -2Q and 8Q, respectively. The spheres are initially connected by a thin conducting wire; the wire is then removed. The charges on the spheres after the removal of the wire are

A) -2Q and 8Q.
B) 2Q and 4Q.
C) 3Q and 3Q.
D) 4Q and 2Q.
E) 8Q and -2Q.