问题详情

What were Chester Arthurs achievements during his presidency according to the author？
A．His successful civil service reform. and his efforts for honest government.
B．His success in dealing with criminals and his ability to serve people.
C．His work in politics for many years and his reform. of examinations.
D．His powerful control of people and his proposal of a new civil service system.请帮忙给出正确答案和分析，谢谢！