The specific conductance of a saturated solution of silver bromide is k scm-¹. The limiting ionic conductivity of Ag* and Br ions are x and y, respectively The solubility of silver bromide in gL-¹ is: (molar mass of AgBr = 188)

a. K x 1000/x-y
b. K/x+y x 188
c. K x 1000 x188/x+y
d. x+y/k x 1000/188