[" 92.It the solubility product of lead iodide "(Pb/2)" is "3.2times10^(-8)" ,then its solubility in moles hire "gSO_(4)],[" will be "],[[" (a) "2times10^(-3)," (b) "4times10^(-4)," (c) "1.6times10^(-5)," (d) "1.8times10^(-5)]]