The five $d$-orbitals are designated as $d_{xy}, d_{yz}, d_{xz}, d_{x^2-y^2},$ and $d_{z^2}$. Choose the correct statement from the following.

• A
  The shapes of the first three orbitals are similar,but the shapes of the fourth and fifth orbitals are different.
• B
  The shapes of all five $d$-orbitals are similar.
• C
  The shapes of the first four orbitals are similar,but the shape of the fifth orbital is different.
• D
  The shapes of all five $d$-orbitals are different.