![](https://cos-cdn.shuashuati.com/pipixue-web/2020-1231-2005-12/ti_inject-812ce.png)
( ) factors are three important factors which need to be considered when implement the transition from the as-is system to the to-be system
A.
planning, analysis, design
B.
programming, tesing, documentation
C.
User case diagram, Class diagram, Data flow diagram
D.
techinical, business , people