当前第四代生成语言是在原型化定义策略的哪项假设中

A．项目参加者之间通信困难

B．快速系统建造工具

C．反复修改需求是不可避免

D．有系统模型供用户参与

— Excuse me. But I want to use your computer to type a report.

— You _____ have my computer if you don't take care of it. [ ]

A. shan't

B. might not

C. needn't

D. shouldn't