Coordination Compounds

Which of the following statements are true about $\left[\mathrm{NiCl}_4\right]^{2-}$ ?

(a) The complex has tetrahedral geometry

(b) Co-ordination number of Ni is 2 and oxidation state is +4

(c) The complex is $\mathrm{sp}^3$ hybridised

(d) It is a high spin complex

(e) The complex is paramagnetic