Which code segment should you use?

You create a client application that remotely calls the Business Connectivity Services (BCS)
object model. You need to create the context that will be used to request a cache refresh. Which
code segment should you use?

A.
Dim cCtx As BdcService = SPFarm.Local.Services.GetValue(Of BdcService)(String.Empty)

B.
Dim cCtx As New ClientContext(String.Empty)

C.
Dim cCtx As New RemoteOfflineRuntime()

D.
Dim cCtx As New RemoteSharedFileBackedMetadataCatalog()