(A) Use the song freely because it has automatically entered the public domain.
(B) Clear any pending claims you have in your account before adding new content.
(C) Request permission to use it since the song is likely still covered by copyright protection.
(D) Estimate the number of other videos that may also use this song in their tribute videos.
This question is a part of the YouTube Content Ownership Assessment. You can find answers to all the questions asked in this exam in our YouTube Content Ownership Assessment Answers page.