2)The prototype model is chosen on what grounds?

A)During information engineering phase when all the
requirements are clear and there is no space for any confusion.
B)When the requirements are well understood and there is a
need for developers to create a fully functional system
within a very short time period.
C)During information engineering phase when only generalized
objectives of the software are defined and it is not
possible to define detailed inputs, business rules and
output requirements.
D)when the focus should be given on the delivery of an
operational product with each increment, where each
increment is a spiral model.