You are an enterprise application developer. You are creating an application that has a layered architecture as shown in the following diagram.

A component that resides in the workflow layer manages transactions across one or more activities in the business logic layer. You need to make modifications to the component. You need to identify the layers that might require modification when the component in the workflow layer is modified. Which two layers should you identify? (Each correct answer presents part of the solution. Choose two.)

A.
Presentation layer

B.
Service fa�ade layer

C.
Business logic layer

D.
Data access layer