The diagram illustrates the electric field pattern between two point charges, $P$ and $Q$, that are opposite in sign and unequal in magnitude. Which statement about the charges is correct?
- AP is negatively charged and has a smaller charge than Q.
- BP is negatively charged and has a greater charge than Q.
- CP is positively charged and has a smaller charge than Q.
- DP is positively charged and has a greater charge than Q.