CaF(s) Ca2+ (aq) + 2 F (aq) AH>0 Dissolution of the slightly soluble salt CaF is shown by the equation above. Which of the following changes will decrease [Ca+] in a saturated solution of CaF2, and why? (Assume that after each change some CaF(s) remains in contact with the solution.) (A) Allowing some of the water to evaporate from the solution, because more CaF(s) will precipitate (B) Adding 0.1 M HNO3(aq), because some F (aq) ions will become protonated (C) Adding 0.1 M NaNO3(aq), because additional liquid will dilute the solution (D) Adding NaF(s), because the reaction will proceed toward reactants