Write a question about the following article.

Peter and I had big plans yesterday to see The Dark Knight . We 'd tried on my birthday , but the timing had n't worked out . The next weekend , he was away again , this time teaching a group workshop .

Question:
What is the Dark Knight ?
Choose from:
A). None of the above choices ..
B). It is a dinner hosted by the black knight.
C). It is a Batman movie ..
D). It is a TV series ..