There are two scenarios presented:

Two objects move toward each other and then repel.
Two objects move toward each other and then attract.


Which statement is true about these scenarios?
Scenario I has two objects that have a positive charge.
Scenario II has two objects that have a negative charge.
Scenario I has two objects with the same charge. Scenario II has one object with a positive charge and one object with a negative charge.
Scenario I has one object with a positive charge and one object with a negative charge. Scenario II has two objects with the same charge.