Which One of the Following Statements Is Not Consistent with Dalton's

Which one of the following statements is not consistent with Dalton's atomic theory of matter?

A) Atoms of one element can be converted into atoms of another element.
B) Each element is composed of atoms that are identical in size, mass, and chemical properties.
C) Compounds are formed from different atoms in simple whole number ratios.
D) Atoms of different elements can combine in several different proportions to make different compounds.
E) Matter is discrete, as proposed by Democritus.