单选题 ______ life cycles are ones in which project phases intentionally repeat one or more project activities as the project team's understanding of the product increases.
A．Iterative and incremental B．Fully plan-driven
C．Adaptive D．Predictive

【正确答案】 A
【答案解析】[解析] 选项B：完全计划驱动型；选项C：适应型；选项D：预测型。