Requirements management is the process of(
题型：单项选择题 共用题干题
问题：
Requirements management is the process of(1),analyzing,tracing,prioritizing and agreeing on requirements and then controlling changes and communicatingto relevant stakeholders.It is a(2) process throughout a project.A requirement is a capability to which a project outcome (product or service) should conform.
空白（1）为（）
A.commu nicating
B.collecting
C.filing
D.documenting