Automatic data conversion will occur if which of the following happens？（）

A.  The client and server have different NLS_LANGUAGE settings

B.  The client and server character sets are not the same，and the database character set is not a strict superset of the client character set

C.  The client and server are in different time zones

D.  The client requests automatic data conversion

E.  The AUTO_CONVERT initialization parameter is set to TRUE