Which two scenarios are examples of a conversational AI workload? Each correct answer presents a complete solution. 
NOTE: Each correct selection is worth one point.
A.  a telephone answering service that has a pre-recorder message
B.  a chatbot that provides users with the ability to find answers on a website by themselves
C.  telephone voice menus to reduce the load on human resources
D.  a service that creates frequently asked questions (FAQ) documents by crawling public websites