单选题 From the passage we may infer that ________.

A、 many people in the private sector are fired for minor mistakes every day
B、 people in the private sector get much punishment than those in the public sector
C、 people in the private sector get much higher pay than those in the public sector
D、 people in the private sector are better trained than those in the public sector

【正确答案】 D

【答案解析】[解析] 推断题，从倒数第三段第二句话可以看出选项D正确。