Which of the following strings can be inserted into an XML column using XMLPARSE?

Which of the following strings can be inserted into an XML column using XMLPARSE?

A.
“<employee/>”

B.
“<?xml version=’1.0′ encoding=’UTF-8′ ?>”

C.
“<!DOCTYPE hello SYSTEM ‘hello_world.dtd’>”

D.
“<xxmlns:ibmcert=’http://www.ibm.com/certify’>”