Which statement correctly describes a consequence of the lanthanoid contraction?

1. A$\mathrm{Lu}{}^{3+}$ is larger than $\mathrm{La}{}^{3+}$
2. Bthe second and third transition series differ greatly in atomic radii
3. C$\mathrm{La}(\mathrm{OH}){}_3$ is more basic than $\mathrm{Lu}(\mathrm{OH}){}_3$ because $\mathrm{La}{}^{3+}$ is larger and polarises the $\mathrm{OH}{}^{-}$ group less
4. D$\mathrm{Lu}(\mathrm{OH}){}_3$ is more basic than $\mathrm{La}(\mathrm{OH}){}_3$