Which of the following d-orbitals experience more repulsion in the crystal field splitting of octahedral complex ? (A) $d_{xy}, d_{yz}, d_{xz}$ (B) $d_{x^2-y^2}, d_{z^2}$ (C) $d_{xy}, d_{x^2-y^2}$ (D) $d_{xz}, d_{z^2}$