答案及解析：[单选题]The development process in the software______involves four phases:analysis,design,implementation,and - 软件水平题库- 答案窝(daanwo.com)-大学生作业答案及考资分享平台

问题：

[单选题] The development process in the software______involves four phases:analysis,design,implementation,and testing.
A.maintenance]
B.1ife] cycle]
C.programming
D.upgrading