Contrary propositions always have the forms:

A) E and O, or E and I
B) I and O
C) A and O, or E and I
D) A and I, or E and O
E) A and E

Contrary Propositions

In logic, contrary propositions are pairs of statements that cannot both be true at the same time, but can both be false.

Forms

In logic, refers to the various shapes or structures that arguments or propositions can take, based on the arrangement of their terms or components.