A 0.012-mol sample of Na2SO4 is added to 400 mL of each of two solutions, one solution contains 1.5 * 10^-3 M BaCl2, the other contains 1.5 * 10^-3 M CaCl2, given that Ksp for BaSO4 = 1.5 * 10^-9 and Ksp for CaSO4 = 6.1 * 10^-5

A) BaSO4 would precipitate but CaSO4 would not

B) CaSO4 would Precipitate but BaSO4 would not

C) Both BaSO4 and CaSO4 would precipitate

D) neither BaSO4 nor CaSO4 would precipitate