The author's tone in this passage is ______.

A．They are afraid that they would again be isolated from American society in general.
B．People would think that Asian students rely on their parents for success.
C．Asian Americans would be a threat to other minorities.
D．American academic achievements have taken on too strong an Asian character.

A．would surprise the brightest minds of the 18th century Englightenment
B．will produce results which cannot be foreseen
C．will help people to make the right choice in advance
D．will bring about disturbing results