What are two functions of a custom mapping module?（）

A.records the token assertion

B.maps a STSUUSER input to a SAML token

C.looks up attributes in an external data source

D.maps a user’s alias during the account linkage operation in SAML 2.0 and Liberty 1.2 protocol

E.maps a GUI XML attributes into UI controls that are used by the IBM Tivoli Federated Identity Manager Console to collect the input data