北宋著名的政治家、文学家范仲俺的千古名句“先天下之忧而忧，后天下之乐而乐”所蕴涵的人生道理是( )

A．正确处理个人与社会的关系

B．集体主义与个人主义的关系

C．社会存在与社会意识的关系

D．人生的追求是成功者的精神动力

In your construction project, the CPI is 1.30 and SPI is 0.85. What could be the potential reason

A) A critical resource went on sick leave for a long period of time, which had not been anticipated earlier.
B) The Cost of raw materials required for construction increased 10%.
C) You had not taken into account inflation rate.
D) There was 4 days waiting time in the curing of cement, and work could not be done during that time.