Consider the following statements
1. The number of holes and electrons decreases and increases respectively for p-type doping.
2. Indium is one of the materials used for p-type doping.
3. Doping is added to an intrinsic semiconductor to form an extrinsic semiconductor.
Which of the above statement(s) is/are correct.
1
1, 2 and 3
2
1 and 2 only
3
2 and 3 only
4
3 only