Which of the following is likely to be available for public use under creative commons?

1. Correct Answer
   Incorrect Answer
   a

   An e-book downloaded from a public domain website

2. Correct Answer
   Incorrect Answer
   b

   A music song downloaded from Spotify

3. Correct Answer
   Incorrect Answer
   c

   A video downloaded from YouTube

4. Correct Answer
   Incorrect Answer
   d

   A pictures downloaded from a company’s website.