Ionic compounds ______._x005F_x000D_ Â _x005F_x000D_ I. have high boiling point_x005F_x000D_ II. have high melting point_x005F_x000D_ III. conduct electricity in solution_x005F_x000D_

• A. Only I and II
• B. Only I and III
• C. Only II and III
• D. All I, II and III