（）analysis emphasizes the drawing of pictorial system models to document and validate both existing and/or proposed systems. Ultimately, the system models become the（）for designing and constructing an improved system.（）is such a technique. The emphasis in this technique is process-centereD. Systems analysts draw a series of process models called（）.（）is another such technique that integrates data and process concerns into constructs called objects.

（） is another such technique that integrates data and process concerns into constructs called objects.

A．Structured analysis

B．Information Engineering

C．Discovery Prototyping

D．Object-Oriented analysis

某宗土地面积10000m²，土地单位价格800元/m²，最高容积率为2，固定费用400万元，单位建筑面积建安成本为1500元，管理费、贷款利息、税费等其他成本费用为建安成本的20%，销售价格为3000元/m²，则该项目的盈亏平衡点销售量为（）m²。

A．10000

B．12000

C．180000

D．15000