Which of the following statements are correct?
(A) Both LiCl and MgCl₂ are soluble in ethanol.
(B) The oxides Li₂O and MgO combine with excess of oxygen to give superoxide.
(C) LiF is less soluble in water than other alkali metal fluorides.
(D) Li₂O is more soluble in water than other alkali metal oxides.
Choose the most appropriate answer from the options given below :