Out of $\text{Fe}^{2+}$, $\text{Co}^{2+}$, $\text{Cr}^{3+}$, $\text{Ni}^{2+}$, the one which shows highest magnetic moment is : (A) $\text{Fe}^{2+}$ (B) $\text{Co}^{2+}$ (C) $\text{Cr}^{3+}$ (D) $\text{Ni}^{2+}$ [Atomic number : $\text{Cr} = 24$, $\text{Fe} = 26$, $\text{Co} = 27$, $\text{Ni} = 28$]