The Principal Disadvantages(s) with the Waterfall Development Methodology Is (Are)

Multiple Choice

The principal disadvantages(s) with the waterfall development methodology is (are) _____.

A) a long time elapses between completion of the system proposal and the delivery of the system
B) if the team misses important requirements, expensive post-implementation programming may be needed
C) the design must be completely specified on paper before programming begins
D) all of the above
E) none of the above