Which statement is CORRECT?

		A minimum cardinality of 1 in the EER model can never be enforced in the relational model.
		In mapping an EER N:M relationship type to the relational model, we create a new relation R. Its primary key is the combination of the foreign keys referring to the primary keys of the relations corresponding to the participating entity types.
		An EER aggregation cannot be mapped in a straightforward way to a relational model.
		An EER relationship type always asks for the creation of a new corresponding relation R in the relational model.