单选题：The spiral model of software development __.
The spiral model of software development __. @[C](1)
A. Ends with the delivery of the software product.
B. Is more chaotic than the incremental model.
C. Includes project risks evaluation during each iteration.
D. Releases five versions of the system.
A.Ends with the delivery of the software product.
B.Is more chaotic than the incremental model.
C.Includes project risks evaluation during each iteration.
D.Releases five versions of the system.
答案：C
A. Ends with the delivery of the software product.
B. Is more chaotic than the incremental model.
C. Includes project risks evaluation during each iteration.
D. Releases five versions of the system.
A.Ends with the delivery of the software product.
B.Is more chaotic than the incremental model.
C.Includes project risks evaluation during each iteration.
D.Releases five versions of the system.
答案：C