An electric dipole is placed at the origin as shown. Points A, B, C and D are at distance r from the origin. Match List I with List II.

List 1

1. (P) Electric potential at A

2. (Q) Electric potential at B

3. (R) Electric potential at C

4. (S) Electric potential at D

List 2

1. (1) -kP sinθ/r²

2. (2) kP cosθ/r²

3. (3) kP sinθ/r²

4. (4) -kP cosθ/r²