1. Why is the Systems development Life Cycle methodology typically referred to as the waterfall model?

a.) Because it was first popularized in a town with many waterfalls

b.) To stress the fact that phases are sequential and iteration (or going back) should be

c.) Because the SDLC, like prototyping, is not iterative.

d.) To convey the notion that getting good user requirements is important and there should be multiple opportunities to elicit user requirements

e.) B and D