When the author uses the expression "it is a long shrug" in referring to Bowles's book, he is commenting on the ______.

A．Those who won the wars should have been tried as war criminals instead of being glorified.
B．The one who invented the wheel may have helped civilization forward to a greater extent than those generals.
C．When the sun grows too cold to maintain life on the earth, people will migrate to other planets.
D．Nations and countries should have learnt to behave properly to each other.

A．not have any quarrels to settle
B．not fight when there are no quarrels to settle
C．settle their quarrels without fighting
D．settle their quarrels by seeing which side can kill off the greatest number of the other side