[单选题]Consider the following scenario： You have a direct

AThe command drops the file +tdgroupA·231.45678.

BThe command physically relocates the file to +tdgroupA/data and renames the file to datafile.dbf.

CThe command creates a copy of the +tdgroupA·231.45678 file and places it in +tdgroupA/data after renaming the file to datafile.dbf.

DThe command creates an alias， datafile.dbf， and places it in +tdgroupA/data and does not remove the +tdgroupA·231.45678 file.

EThe command creates a file， datafile.dbf， in +tdgroupA/data and removes the references for +tdgroupA·231.45678 from the data dictionary views.