A point charge `q_1=q` is placed at point P. Another point charge `q_2=-q` is placed at point Q. At some point `R(R!=P, R!=Q)`, electric potential due to `q-1 is V_1` and electric potential due to `q_2` is `V_2`. Which of the following is correct
A. only for some points `V_1gtV_2`
B. only fro some points `V_2gtV_1`
C. for all points `V_1gtV_2`
D. for all points `V_2gtV_1`