Which is not a valid locale definition file type？（）

A. All objects in the database
B. Tables owned by SYS and SYSTEM
C. Data dictionary tables
D. NCHAR columns
E. CHAR columns

A. NLS_LANG
B. NLS_COMP
C. NLS_SORT
D. None of the above

A. NLS_SORT = BINARY
B. NLS_SORT = BINARY_AI
C. NLS_SORT = BINARY_CI
D. NLS_SORT = BINARY_AI_CI
E. Binary sorts are case insensitive and accent insensitive by default