The seven basic quality tools are used within in the context of the PDCA Cycle to solve quality-related problems.These tools are used in（）in the following processes.（2017年下半年系统集成项目管理工程师）
The seven basic quality tools are used within in the context of the PDCA Cycle to solve quality-related problems.These tools are used in（）in the following processes.（2017年下半年系统集成项目管理工程师）
A、plan quality management
B、perform quality assurance
C、perform quality control
D、perform quality improvement
参考答案：C
参考解析：