【单选题】
A 描述产品、测量所需功能、构建原型 Describe the product, measure the required functions, and build a prototype
B 前端工程、系统分析、技术设计 Front-end engineering, system, technical design
C 澄清设计规格、进行市场研究、设计产品 Clarify design specifications, conduct market research, and design products
D 概念描述、产品设计规格、技术规格 Conceptual description, product design specifications, technical specifications
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