Which of the following describes a Sharable Content Object Reference Model (SCORM) manifest?

A.
An XML document that describes a Sharable Content Object (SCO)

B.
An XHTML document that is SCORM-conformant

C.
A relational database that contains Sharable Content Object (SCO) information

D.
A style sheet that gives structure to the page containing a Sharable Content Object (SCO)