Which two statements are true about the role of XML schemas in Web services? (Choose two.)
A. DTDs provide stricter data typing than XML schemas.
B. XML schemas can be used to validate the organization of XML documents.
C. XML schemas contain a vocabulary, content model and data types.
D. DTDs are easier to map to Java than XML schemas, and so remain more popular.
E. The W3C recommends that XML schemas be referred to as XSD.
F. The W3C has designated that XML schemas be referred to as WXS.