A developer is designing the presentation tier for a web application that relies on a complex session bean.The session bean is still being developed and the APIs for it are NOT finalized. Any changes to the sessionbean API directly impacts the development of the presentation tier. Which design pattern provides a meansto manage the uncertainty in the API？（）
- AView Helper
- BFront Controller
- CComposite View
- DIntercepting Filter
- EBusiness Delegate