What is the tone of the author in the last paragraph（）

A．Alumni reunions and American university traditions.
B．Alumni reunion and its soeial and eeonomie implieations.
C．Reasons for popularity and (non)attendance for alumni reunions.
D．A historical perspective for alumni reunions in the United States.

A．The memorial is symbolic of the great man’s achievements.
B．Lincoln’s greatness remains despite the passage of time.
C．Each generation has it own interpretation of Lincoln.
D．People get to know Lincoln through memorializers.