Which of the following can best describe the tone of the passage

A．how children's thoughts are corrupted by racism as they grow
B．the author's far more miserable experience of being neglected
C．how the black people should unite to fight against the Whites
D．the education of smaller children to behave pleasantly to each other

A．having an edge in competition
B．in great demand
C．on the way to success
D．preparing for challenge