They came first for the Communists , and I did n't speak up because I was n't a Communist . Then they came for the Jews , and I did n't speak up because I was n't a Jew . Then they came for the trade unionists , and I did n't speak up because I was n't a trade unionist . Then they came for the Catholics , and I did n't speak up because I was a Protestant .
What is the purpose of the post ?
Pick the best answer from the following options:
A. None of the above choices .
B. To teach history
C. To teach literature
D. To teach economics


B