The correct options are
C Like charges repel each other.
D Unlike charges attract each other.
Like charges repel each other because of the repulsive forces acting between them. This explains the images where the positive charges (in blue) and the negative charges (in red) want to be as far away from each other as possible. Meanwhile, unlike charges attract each other. This explains the third image as the positive and the negative charge want to be as close to each other as possible.