You need to delete the previous versions of all documents in a document library

You need to delete the previous versions of all documents in a document library. The deleted
versions of the documents must be retained in the SharePoint Recycle Bin. What should you do?

A.
For each document, call the RecycleAll method of the Versions property.

B.
For the document library, call the Recycle method.

C.
For the document library, call the Delete method.

D.
For each document, call the DeleteAll method of the Versions property.