You are the project manager of Alpha Network Inc. Your company is doing network planning for a major bank. You are planning to digram the activity dependancies using activity list. Which of the following is true ？（）
A．PDM is also the AOA diagramming method.
B．PDM is also the AOD digramming method.
C．PDM is also AON digramming method.
D．PDM is also ADM diagramming method.
