Which, If Any, of the Following Compounds Form an Acidic

Which, if any, of the following compounds form an acidic solution when dissolved in water?
I. CaCl₂
II. CrCl₃
III. NaCl
IV. FeCl₂

A) None form an acidic solution.
B) All form an acidic solution.
C) Only I and III form an acidic solution.
D) Only II and IV form an acidic solution.
E) Only I, II, and IV form an acidic solution.