问题：
[单选题] Estimate Activity Duration sis the process of estimating the number of work period sto complete indivities with estimated resources.The tools and technques is not including（ ）.
A、
expert judgment
B、
analogous estimating
C、
requirements trace ability matrix
D、
three-point estimating
参考答案：
C、
requirements trace ability matrix
● 参考解析
