问题
An environmental remediation project has succeeded in reducing costs.This achiebed by implementing a change request for new technology that was not available when the scope was originally defined.The technology change that is adopted is a/an:
A:Value adding change.
B:Error or omission in defining the scope of the project.
C:External event.
D:Contigency or workaround plan.
B:Error or omission in defining the scope of the project.
C:External event.
D:Contigency or workaround plan.
正确答案是：
