You need to add a new field to a provisioned content type.
You must propagate the field to child lists and child content types.
What should you use?
A.
<AddContentTypeField>
B.
<ApplyElementManifests>
C.
<FieldRefs>
D.
<MapFile>
Explanation:
MNEMONIC RULE: “field for content type = AddContentTypeField”AddContentTypeField Element (Feature)
http://msdn.microsoft.com/en-us/library/ff595314.aspx