What are three benefits provided by the enhanced Unicode support?

What are three benefits provided by the enhanced Unicode support? (choose three)

A.
support for the AL24UTFFSS character set

B.
support for fixed-width character encoding

C.
Unicode support in the database character set

D.
Richer support for more character sets languages and territories

Explanation:
Globalization and Unicode support have been enhanced in Oracle Database 10 g Release
2. Consistent linguistic ordering support has been added for all SQL functions, enhancing the ability to write internationalized applications without regard to locale. The Globalization Development Kit (GDK) for PL/SQL provides new locale mapping tables and Japanese transliteration support. SQL Regular Expression support has been updated to support key Perl conventions used in the Life Science community. This release also supports the latest version of Unicode 4.0. Identification of potential problems when migrating to another database character set has also been enhanced. The Character Set Scanner (CSSCAN) now offers selective scanning and provides support for new data types. The Language and Character Set Scanner (LCSSCAN) has improved detection quality of shorter text strings and now supports HTML files.

REF: Oracle(r) Database New Features Guide, 1-2