Performing（）involves monitoring specific project results to determine if they comply with relevant quality standards and identifying ways to eliminate causes of unsatisfactory results.

A．quality planning

B．quality assurance

C．quality performance

D．quality control

就给定资料所反映的主要问题，用1200字左右的篇幅，自拟标题进行论述。要求中心明确，内容充实，论述深刻，有说服力。