Consider the following complex ions, P, Q and R.
$$P = [FeF_6]^{3-}, Q = [V(H_2O)_6]^{2+}$$ and $$R = [Fe(H_2O)_6]^{2+}$$
The correct order of the complex ions, according to their spin-only magnetic moment values (in B.M.) is

A

$$R < Q < P$$

B

$$Q < R < P$$

C

$$R < P < Q$$

D

$$Q < P < R$$