複選題18. Consider a p-n diode. Which of the following are correct? (A) Near the p-n junction, electrons and holes diffuse and recombine, resulting in a depletion region. (B) When forward biased, there will be electrons flowing from n side to p side. (C) When forward biased, there will be holes flowing from p side to n side. (D) When unbiased, the Fermi energy is aligned throughout the diode. (E) When unbiased, the conduction band edge is aligned throughout the diode.