Identify the incorrect statement from the following:

• A

  Zirconium and Hafnium have identical radii of $160\mathrm{pm}$ and $159\mathrm{pm},$ respectively as a consequence of lanthanoid contraction.
• Correct answer
  B

  lanthanoid reveal only $+3$ oxidation state.
• C

  The lanthanoid ions other than the ${\mathrm{f}}^0$ type and the ${\mathrm{f}}^{14}$ type are all paramagnetic.
• D

  The overall decrease in atomic and ionic radii
  from lanthanum to lutetium is called lanthanoid 
  contraction.

Hence, the correct answer is option: 'B'.