问题
Change requests are an integral part of a project, and one of the ways a PM controls scope changes. Change requests are a result of:
A:Changes in quality of a vendor-provided component
B:A beneficial change, which occurred after the scope was approved
C:An error or omission is the product description
D:A make or buy decision which was modifiedE.All of the above
B:A beneficial change, which occurred after the scope was approved
C:An error or omission is the product description
D:A make or buy decision which was modifiedE.All of the above
正确答案是：
