What could be the reason?

You have imported a new calculation view in a folder that contains an .hdinamespace file. This calculation view consumes one data source, which is a table. When trying to deploy the calculation view, the deployment fails with a namespace-related issue.

What could be the reason? Note: There are 2 correct answers to this question.
A . The namespace used within the calculation view to reference the table is different from the actual namespace in the identifier of this table.
B . The imported calculation view and its data source have different namespaces.
C . An .hdinamespace file is defined in the SRC folder that specifies a different namespace property
than the one in the identifier of the calculation view.
D . The .hdinamespace specifies "sub-folder":"append", so calculation views can only be created in subfolders.

Answer: A B