Which of the following sequences of hybridisation, geometry and magnetic nature are correct for the given coordination compounds? A. [ NiCl_4]^2--…

Which of the following sequences of hybridisation, geometry and magnetic nature are correct for the given coordination compounds ? A. $\displaystyle \left[\mathrm{NiCl}_4\right]^{2-}-\mathrm{sp}^3$, tetrahedral, paramagnetic B. $\displaystyle \left[\mathrm{Ni}\left(\mathrm{NH}_3\right)_6\right]^{2+}-\mathrm{sp}^3 \mathrm{~d}^2$, octahedral, paramagnetic C. $\displaystyle \left[\mathrm{Ni}(\mathrm{CO})_4\right]-\mathrm{sp}^3$, tetrahedral, paramagnetic D. $\displaystyle \left[\mathrm{Ni}(\mathrm{CN})_4\right]^{2-}-\mathrm{dsp}^2$, square planar, diamagnetic Choose the correct answer from the options given below :