题目内容：
回答题：The purpose of the requirements definition phase is to produce a clear, complete, consistent, and testable __（71）__ of the technical requirements for the software product. During the requirements definition phase, the requirements definition team uses an iterative process to expand a broad statement of the system requirements into a complete and detailed specification of each function that the software must perform and each __（72）__ that it must meet. The starting point is usually a set of high level requirements from the __（73）__ that describe the project or problem.
In either case, the requirements definition team formulates an overall concept for the system and then defines __（74）__ showing how the system will be operated publishes the system and operations concept document and conducts a system concept review（SCR）.
Following the SCR, the team derives __（75）__ require ments for the system from the high level requirements and the system and operations conceptusing structured or object-oriented analysis. the team specifies the software functions and algorithms needed to satisfy each detailed requirement.（71） A．function
B．definition
C．specification
D．statement
参考答案：
答案解析：