单项选择题
Many of the activities performed during the preliminary
investigation are still being conducted in ______, but in much greater depth
than before. During this phase, the analyst must become fully aware of the
______ and must develop enough knowledge about the ______ and the existing
systems to enable an effective solution to be proposed and implemented. Besides
the______ for process and data of current system, the deliverable from this
phase also includes the ______for the proposed system.
A.hardware and software specification
B.system performance specification
C.formal requirements definition
D.general problem statement