Coordination Compounds

Given below are two statements, one is labelled as Assertion $\mathbf{A}$ and the other is labelled as Reason $\mathbf{R}$. Assertion A: The spin only magnetic moment value for $\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]^{3-}$ is $1.74 \mathrm{BM}$, whereas for $\left[\mathrm{Fe}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{3+}$ is $5.92 \mathrm{BM}$. Reason $\mathbf{R}$ : In both complexes, $\mathrm{Fe}$ is present in +3 oxidation state. In the light of the above statements, choose the correct answer from the options given below: