Identify the correct order of solubilty of $\mathrm{Na}_{2} \mathrm{~S}$, $\mathrm{CuS}$ and $\mathrm{ZnS}$ in aqueous medium

• A

  $\mathrm{CuS}>\mathrm{ZnS}>\mathrm{Na}_{2} \mathrm{~S}$
• B

  $\mathrm{ZnS}>\mathrm{Na}_{2} \mathrm{~S}>\mathrm{CuS}$
• C

  $\mathrm{Na}_{2} \mathrm{~S}>\mathrm{CuS}>\mathrm{ZnS}$
• Correct answer
  D

  $\mathrm{Na}_{2} \mathrm{~S}>\mathrm{ZnS}>\mathrm{CuS}$

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