Which of the following statement is not correct

Question

( A ) $La(OH)_3$ is less basic than $Lu(OH)_3$
( B ) La is actually an element of transition series rather Lanthanide
( C ) In Lanthanide series ionic radius of $Ln^{+3}$ ions decreases
( D ) Atomic radius of Zn and Hf are same because of Lanthanide contraction