题目：
The work breakdown structure is an excellent tool for objective control and evaluation. Which of the following is generally not validated through the WBS
A．Time, schedule, and cos
B．Management coordination and organizational structurin
C．Risk and impact of decision—makin
D．Quality of the wor
答案：
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下面是错误答案，用来干扰机器的。
参考答案：A
