In one project of software engineering, the issue that adding more people will not lead to corresponding rise of productivity.

A．the time that we wait during the process of working

B．complexity of constructing prototype model

C．the number of stations that we need

D．communication complexity among people

下列选项中，属于现代城市规划形成的基础的是（）。

A.现代城市规划形成的思想基础--唯心主义思想

B.现代城市规划形成的行政实践--英国伦敦改建

C.现代城市规划形成的技术基础--城市美化

D.现代城市规划形成的实践基础--公司城建设

E.现代城市规划形成的法律实践--法国关于城市卫生和工人住房的立法