单选题 ______ is a measurable, verifiable work poduct such as specification, feasibility study report, detail document, or working prototype.
A. Milestone B. Deliverable C. Etc D. BAC

【正确答案】 B
【答案解析】可交付物是指类似于规格说明书、可行性研究报告、详细文档或可运行的原型之类的可测量和验证的工作产品。