(Choose 1 answer)
Which of the following XML fragments are well-formed?
A. <!-- Author: me, version: 1.01 -->
<?xml version='1.0'?>
B. <?xml version='1.0'?>
<!-- Author: me, version: 1.01 -->
<root><sub element></root></sub element>
C. <?xml version='1.0'?>
<!-- Author: me, version: 1.01 -->
<root></root>
D. <?xml version='1.0'?>
<!-- Author: me, version: 1.01 -->
<root id='1' id='2'></root>
