How do these two anecdotes help readers understand Achebe’s purpose for writing the essay?

by suggesting that Achebe is excited about people’s interest in Africa and wants to teach people about it
by suggesting that Achebe wants to correct false perceptions about the African continent
by suggesting that Achebe is trying to draw attention to his essay by beginning with two interesting stories
by suggesting that Achebe is upset that older and younger people have conflicting views of Africa