The solubility product $\left({\mathrm{K}}_{\mathrm{sp}}\right)$ of AgCl is $1.8\times {10}^{-10}$. Precipitation of AgCl will occur only when equal volumes of solutions of

• A

  ${10}^{-4}{\mathrm{MAg}}^{+}\text{and }{10}^{-4}{\mathrm{MCl}}^{-}\text{are mixed }$

• B

  ${10}^{-7}{\mathrm{MAg}}^{+}\text{and }{10}^{-7}{\mathrm{MCl}}^{-}\text{are mixed }$

• C

  ${10}^{-5}{\mathrm{MAg}}^{+}\text{and }{10}^{-5}{\mathrm{MCl}}^{-}\text{. are mixed }$

• D

  ${10}^{-10}{\mathrm{MAg}}^{+}\text{and }{10}^{-10}{\mathrm{MCl}}^{-}\text{are mixed }$