What is the solubility of ${\left({\mathrm{A}}^{\mathrm{x}+}\right)}_{\mathrm{y}}{\left({\mathrm{B}}^{\mathrm{y}-}\right)}_{\mathrm{x}}$ in water at 298 K?

• A

  ${\left(\frac{{\mathrm{K}}_{\mathrm{sp}}}{{\mathrm{x}}^{\mathrm{x}}.{\mathrm{y}}^{\mathrm{y}}}\right)}^{\mathrm{x}+\mathrm{y}}$

• B

  ${\left(\frac{{\mathrm{K}}_{\mathrm{sp}}}{{\mathrm{x}}^{\mathrm{x}}.{\mathrm{y}}^{\mathrm{y}}}\right)}^{\frac{1}{\mathrm{x}+\mathrm{y}}}$

• C

  ${\left(\frac{{\mathrm{K}}_{\mathrm{sp}}}{{\mathrm{x}}^{\mathrm{x}}+{\mathrm{y}}^{\mathrm{y}}}\right)}^{\frac{1}{\mathrm{xy}}}$

• D

  ${\left(\frac{{\mathrm{x}}^{\mathrm{x}}.{\mathrm{y}}^{\mathrm{y}}}{{\mathrm{K}}_{\mathrm{sp}}}\right)}^{\frac{1}{\mathrm{x}+\mathrm{y}}}$