(A) Package uploader
(B) Basic YouTube.com UI
(D) SFTP or Aspera Dropbox
Since Label W has the rights to a large catalog of songs(10,000) the Basic YouTube.com UI asset delivery method is the least appropriate for their needs.
The Basic YouTube.com UI is best if you only need to upload or edit a few videos per week. If you need to upload a high volume of videos then you should use either the Package uploader or SFTP or Aspera Dropbox.
This question is a part of the YouTube Music Rights Management Certification Exam. You can get answers to all the questions asked in this exam on our YouTube Music Rights Management Certification Assessment Answers page.