Which of the following is the correct order with respect to the property indicated?
(A) CI > F (lonisation energy)
(B) $(\mathrm{K}_{2}\mathrm{O} > \mathrm{Na}_{2}\mathrm{O} > \mathrm{Al}_{2}\mathrm{O}_{3})$ (Basic nature)
(C) $\mathrm{K} > \mathrm{Na} > \mathrm{Al} > \mathrm{Mg}$ (metallic character)
(D) None of these