下面关于模板的描述，错误的是（ ）。

A．层次模型

B．关系模型

C．网状模型

D．以上皆非

Object-oriented analysis (OOA) is a semiformal specification technique for the object-oriented paradigm. Object-oriented analysis consists of three steps. The first step is（）. It determines how the various results are computed by the product and presents this information in the form of a（） . and associated scenarios. The second is （）, which determines the classes and their attributes; Then determine the interrelationships and interaction among the classes. The last step is （）, which determines the actions performed by or to each class or subclass and presents this information in the form of（） .

It determines how the various results are computed by the product and presents this information in the form of a（） .

A.collaboration diagram

B.sequence diagram

C.use-case diagram

D.activity diagram