Perform Quality Control is the process of monitoring and recording results of executing the Quality Plan activities to assess performance and recommend necessary changes．(    ) are the techniques and tools in performing quality control．
①Statistical sampling            ②Run chart                ③Control charts
④Critical Path Method            ⑤Pareto chart           ⑥Cause and effect diagrams
A．①②③④
B．②③④⑤
C．①②③⑤⑥
D．①③④⑤⑥