In a sample of associates at a law firm, 30 percent are second-year associates, and 60 percent are not first-year associates. What percentage of the associates at the law firm have been there for more than two years?

A、
10
B、
20
C、
30
D、
40
E、
50

【正确答案】 C

【答案解析】

两年以上的人员=1-30%-(1-60%)=30%，故本题选C项。