Which statement is true regarding the extension of base application subtype entities?

When considering the extension of base application subtype entities in Guidewire, it's important to recognize that these entities can indeed be extended in the same way as supertype entities. This means that developers have the flexibility to incorporate additional features and functionalities into subtype entities, just as they would with supertype entities.

This capability allows for greater customization and adaptability, as it enables developers to tailor the behavior and properties of these entities to meet the specific needs of their applications. By allowing extensions, Guidewire promotes a more modular and maintainable code structure, making it easier to implement changes or additions without disrupting the entire application framework.

The other statements do not accurately reflect the flexibility and capabilities associated with subtype entities. For instance, they can still be modified and enhanced after creation, contradicting the notion that they cannot be extended. Additionally, while inheritance can be a complex aspect of design, subtype entities can utilize a more versatile inheritance structure rather than being restricted solely to single inheritance.