Two equal and opposite charges \(4×10^{-8}C\) are placed \(2×10^{-2}\) cm away, from a dipole. If this dipole is placed in an external electric field of \(4×10^8NC^{-1}\), the value of maximum torque and the work done in rotating it through 180o will be
(A) \(64×10^{-4}Nm\) and \(64×10^{-4}J\)
(B) \(32×10^{-4}Nm\) and \(32×10^{-4}J\)
(C) \(64×10^{-4}Nm\) and \(32×10^{-4}J\)
(D) \(32×10^{-4}Nm\) and \(64×10^{-4}J\)