Consider that d^{6} metal ion (M^{2+}) forms a complex with aqua ligands, and the spin only magnetic moment of the complex is 4.90 BM. The geometry and the crystal field stabilization energy of the complex is :

(1) tetrahedral and –1.6$\Delta$_{t} + 1P

(2) octahedral and –2.4$\Delta$_{0} + 2P

(3) tetrahedral and –0.6$\Delta$_{t}

(4) octahedral and –1.6$\Delta$_{0}