There are two styles in the evolution of instruction set, that is CISC and RISC. Which chip belongs to the CISC ( )

A．The definition phase results in the Software Requirements Specification
B．Testing is optional in software life cycle
C．CASE tools can only aid in the design phase of a software life cycle
D．A change during a later phase does not require the documentation of all earlier phases to be up-dated

A．时序
B．软件
C．原语
D．数据