If We Are Solving an Enthymeme and the Conclusion Is

Multiple Choice

If we are solving an enthymeme and the conclusion is an I proposition, then according to the modern view of existential import, the premises:

A) can be any propositions
B) must be an I proposition and an A proposition
C) must both be A propositions
D) must both be I propositions
E) must be an I proposition and an O proposition