The title 'The duel' gives the reader clues about how this poem could possibly be about a duel of some sort. This is because the title inculdes the word 'Duel' and puts 'the' infront of 'Duel' to indicate that there will be a specific duel taking place in the poem.
I would say A because C is for Expositories/ argumental essays, D makes it sound more like a biography, and b makes it soud like a mix of the three previously stated, whereas a makes it sound like a true fiction story, my favorite type of books.