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For extrinsic semiconductors; when doping levels are increased
A) Fermi-level of P and n-type semiconductors will not be affected.
B) Fermi-level of P-type semiconductors will go downward and Fermi-level of n-type semiconductor will go upward.
C) Fermi-level of both P-type and n-type semiconductors will go upward for T (greater than) T(F)K and downward for T (less than) T(F)K where T(F) is Fermi temperature.
D) Fermi-level of P-type semiconductor will go upward and Fermi-level of n-type semiconductors will go downward.

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