Review Questions: Please select from the choices and explain your answer. (1) Which of the following is not true for intrinsic semiconductors? (A) There are holes in intrinsic semiconductors. (B) There are free electrons in intrinsic semiconductors. (C) They make good insulators. (D) Increasing thermal energy increases their conductivity. (2) In the depletion region of a semiconductor p-n junction there: (A) is an electric field. (B) are more holes than outside the depletion region. (C) are more free electrons than outside the depletion region. (D) is current perpendicular to the current outside the depletion region.​