A company is deploying a new file server to consolidate shares from several legacy servers. Whichof the following is the BEST method to ensure that the new file shares are being used？（）

A. Setup the new file server and shut down the legacy servers.
B. Remove all the DNS entries for the legacy servers.
Create a logon script to remap the old file shares to the new file shares.
D. Go to each users computer， remove all shares and setup the new shares.