A gun manufacturer wants to publish its internal how-to video on their website using a famous children's song by a known pacifist. What should the manufacturer do before posting the video?

a.Put a disclaimer at the end of video stating the song was used without permission

b.Get a waiver of the songwriter's moral rights

c.Ensure the music is clearly recognizable

d.Get permission by the website host to include the song

e.Make sure the video gives no credit to the songwriter