Identify the incorrect statement among the following:

Option D is incorrect. $4f$ and $5f$ orbitals belong to different shells. $4f$ electrons are closer to the nucleus and provide better shielding compared to $5f$ electrons. The $5f$ orbitals are more extended in space and are less shielded by the inner core than $4f$ orbitals.Regarding other options:Lanthanoids show similar chemical properties due to the same oxidation state ($+3$) and similar ionic radii (lanthanoid contraction).$\text{La}$ ($[Xe]5d^{1}6s^2$) and $\text{Lu}$ ($[Xe]4f^{14}5d^{1}6s^2$) have electrons in $d$ orbitals while $f$ orbitals are either empty or completely filled.