Let $\mathrm{X}\mathrm{ }\mathrm{a}\mathrm{n}\mathrm{d}\mathrm{ }\mathrm{Y}$ be two arbitrary, $3\mathrm{ }\times 3$ , non - zero, skew - symmetric matrices and Z be an arbitrary $3\mathrm{ }\times 3$ , non - zero, symmetric matrix. Then which of the following matrices is (are) skew symmetric ?

• A

  ${\mathrm{Y}}^3\mathrm{ }{\mathrm{Z}}^4-{\mathrm{Z}}^4\mathrm{ }{\mathrm{Y}}^3$
• B

  ${\mathrm{X}}^{44}+{\mathrm{Y}}^{44}$
• Correct answer
  C

  ${\mathrm{X}}^4{\mathrm{Z}}^3-{\mathrm{Z}}^3{\mathrm{X}}^4$
• Correct answer
  D

  ${\mathrm{X}}^{23}+{\mathrm{Y}}^{23}$

Hence, the correct answer is options: 'C', 'D'.