Must the Antecedent and the Consequent of a Hypothetical Proposition

Multiple Choice

Must the antecedent and the consequent of a hypothetical proposition be affirmative?

A) Only the antecedent must be affirmative.
B) Only the consequent must be affirmative.
C) Both must be affirmative.
D) It doesn't matter whether either of them is affirmative or negative.
E) They can both be affirmative or both be negative, but it is not allowed for one to be affirmative while the other is negative.