A project manager has a group of developers that understand the needs of a purchasing system quite well and have programming knowledge. They would like to develop client$-$facing applications for the system quickly using a tool that generates most of the code for them, but would still require some backing code they have control over. Which is the best development approach for the developers?

a$.$

low$-$code

b$.$

RAD

c$.$

click

d$.$

Extreme programming