Which view shows all valid values for the NLS_LANGUAGE， NLS_SORT， NLS_TERRITORY， and NLS_CHARACTERSET parameters？（）

A. WHERE clause
B. ORDER BY clause
C. BETWEEN clause
D. NLSSORT function
E. NLS_SORT function

A. A must contain all of the characters defined in B
B. A must be Unicode
C. The encoded values in A must match the encoded values in B for all characters defined in B 
D. A must be a multibyte character set
E. The encoded values in A must match the encoded values in B for all numeric and alphabetic character

A. NLS_LANGUAGE
B. NLS_SORT
C. NLS_CALENDAR
D. NLS_CHARACTERSET
E. NLS_TERRITORY