A point Q lies on the perpendicular bisector of an electrical dipole of dipole moment p. If the distance of Q from the dipole is r (much larger than the size of the dipole), then the electric field at Q is proportional to :

Question

( A ) $p \;and\; r^{–2}$
( B ) $p^{–1} \;and \; r^{–2}$
( C ) $p^{2}\; and\; r^{–3}$
( D ) $ p \;and \;r^{–3}$