An Uncharged Spherical Conducting Shell Surrounds a Charge −Q at the Center

An uncharged spherical conducting shell surrounds a charge −q at the center of the shell. The charges on the inner and outer surfaces of the shell are respectively

A) −q, −q.
B) −q, +q.
C) +q, −q.
D) +q, +q.
E) +q, 0.