Answer:
2 and 3
Explanation:
The right answer is the option 2 and 3,
This is all about the electrons transfer from one material to the other material.
For example if the electrons in the valence shell of one material are loosely attached then the other material's atoms try to take those electron to complete their shells and that is how the charges transfers from one another.
And it could also be happen as in option 2.