If the temperature of an extrinsic semiconductor is increased so that the intrinsic carrier concentration is doubled, then

[A].	the majority carrier density is doubled
[B].	the minority carrier density is doubled
[C].	the minority carrier density becomes 4 times the original value
[D].	both the majority and minority carrier densities double

Answer: Option D

Explanation:

As the intrinsic carrier concentration is doubled, the concentration of both electrons and holes is doubled.