William is the lead programmer for Gummerson, Inc., a software company located in San
Francisco. Gummerson is looked upon as one of the leading software development companies for
medical and health related applications. William believes that his company is so successful
because they believe in involving the user or client in the design and development of the
programs. What software development methodology does Gunnerson, Inc. use when creating
applications for clients?

A.
Fountain

B.
RAD

C.
JAD

D.
Waterfall

Explanation: