Read the following context and choose the best option to answer the question.
Context: A few years before that , I had published a book about a political issue . An activist 's handbook . I had 20,000 copies in my garage when I found out about a large march in Washington . I bought an outdoor booth and trucked the books down to DC .
Question: Why would the narrator be going to DC ?
Options: 
A. To see a concert .
B. None of the above choices .
C. To see the sights .
D. To take part in a march .


D