Which of the following NLS_SORT parameter values would result in case-insensitive and accent-insensitive binary sorts？（）  

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

A. VARCHAR2
B. CHAR
C. NVARCHAR2
D. CLOB
E. LONG

A. 1 is a monolingual sort.
B. 2 is a monolingual sort.
C. 1 is case insensitive.
D. Both 1 and 2 are case insensitive.
E. Case sensitivity is unknown.