I am definitely agree with the answer below, the last option is the only right answer I can see D. one of the first novels about colonialism from an African point of view. This novel is considered to be successfully spreaded around the world because of author's using English language to describe things and of course the style and tone of the story. The most impressive thing is that colonialism is being shown by African people from the different sides. So it's clear that the correct answer is D.
