Which of the following statements is incorrect for a solution saturated with AgCl and AgBr if their solubilities in moles per litre in separate solutions are x and y respectively ?

• A

  $\left[{\mathrm{Ag}}^{+}\right]=\mathrm{x}+\mathrm{y}$

• B

  $\left[{\mathrm{Ag}}^{+}\right]=\left[{\mathrm{Br}}^{-}\right] + \left[{\mathrm{Cl}}^{-}\right]$

• C

  $\left[{\mathrm{Br}}^{-}\right] = \mathrm{y}$

• D

  $\left[{\mathrm{Cl}}^{-}\right] > \mathrm{x}$