You are implementing an Entity Data Model . You need to add a definition to designate that a set can contain an Employee entity type and subtypes Manager and SalesPerson.
Which type of definition should you add?

An AssociationSet represents a particular type of data, such as a customer entity or an order entity in the EDM.

An EntitySet for an EntityType contains instances of the EntityType or any of its subtypes. More than one EntitySet can be defined by using the same EntityType.