单选题 According to the passage, the rate of employment can be expected to rise when ______.

A、 productivity rises at the same rate as growth of the labor force
B、 productivity and labor force increase at a greater rate than output
C、 output exceeds productivity
D、 rate of economic growth is less than the number of man hours required

【正确答案】 C

【答案解析】从第二段可以得出结论，其他答案与事实不相符。