Answer:
Option C.
Step-by-step explanation:
Firstly, if object A has a positive charge then it means object B also has a positive charge since both the objects are repelling each other (similar charges repel).
Secondly, object C is attracting object B, this means object C has a negative charge since we already know object B has a positive charge (different charges repel each other).
So here, the only correct will be C, "Object C is negatively charged meaning it has gained electrons resulting in a greater number of electrons than protons."
This is because gaining electrons results in more negative charge than positive charge making the object negatively charged.