Which of the Following Statements Is Not True

Which of the following statements is not true?

A) When a metal reacts with a nonmetal,an ionic compound is formed.
B) A metal-nonmetal reaction can always be assumed to be an oxidation-reduction reaction.
C) Two nonmetals can undergo an oxidation-reduction reaction.
D) When two nonmetals react,the compound formed is ionic.
E) A metal-nonmetal reaction involves electron transfer.