An electric dipole of moment \[p\] is placed in the position of stable equilibrium in uniform electric field of intensity \[E\]. It is rotated through an angle \[\theta \] from the initial position. The potential energy of electric dipole in the final position is [MP PET 1993]

• A.                    \[pE\cos \theta \]
• B.                                      \[pE\sin \theta \]
• C.                    \[pE(1-\cos \theta )\]
• D.                                      \[-pE\cos \theta \]