Select which of the following is a valid XML document.

Select one or more:

A$.$ c$?$xml version$="1,0"?>$

$4$ELEMENT elmnt$1($#PCDATA$)>$

$1>$

sitelmnt.

c$!$ELEMENT elmnt$1($#PCDATA$)$

$2$x s$/$elmnt$2>$

cirtelmnta