Explanation/Reference:
The Single Table per Class Hierarchy Strategy
This strategy provides good support for polymorphic relationships between entities and queries that cover the entire entity class hierarchy.
Note: Enum InheritanceType:
* SINGLE_TABLE
A single table per class hierarchy.
* JOINED
A strategy in which fields that are specific to a subclass are mapped to a separate table than the fields that are common to the parent class, and a join is performed to instantiate the subclass.
* TABLE_PER_CLASS
A table per concrete entity class.
Incorrect:
Not D: There is no such thing as inheritanceType.POLYMORPHIC_JOIN_TABLE.
Reference: Entity Inheritance Mapping Strategies
javax.persistence, Enum InheritanceType