Switch S Is Closed to Apply a Potential Difference V

Multiple Choice

Switch S is closed to apply a potential difference V across a p-n junction as shown.Relative to the energy levels of the n-type material, with the switch open, the electron levels of the p-type material are:

A) unchanged
B) lowered by the amount e^-Ve/kT
C) lowered by the amount Ve
D) raised by the amount e^-Ve/kT
E) raised by the amount Ve