Which of the Following Statements Is False

Multiple Choice

Which of the following statements is false?

A) The probability of an energy state being occupied is called the Fermi factor.
B) At temperatures greater than T = 0,some electrons occupy higher energy states because of thermal energy gained during collisions with the lattice.
C) An electron cannot move to a higher or lower energy state unless it is unoccupied.
D) Since the kinetic energy of lattice ions is of the order of kT,electrons cannot gain much more energy than kT in collisions with these ions.
E) None of these is false.