[pH" of a saturated solution of "Ba(OH)_(2)" is "12." The value of "],[" solubility product "(K_(" sp "))" of "Ba(OH)_(2)" is: "],[[" (a) "3.3times10^(-7)," (b) "5.0times10^(-7)],[" (c) "4.0times10^(-6)," (d) "5.0times10^(-6)]]