An Engineer Has Just Finished Building a Prototype of a Lawn

Multiple Choice

An engineer has just finished building a prototype of a lawn tractor that is powered by a hydrogen fuel cell. Which of the following should be the next step in the design process?

A) testing the prototype to evaluate its performance
B) asking for funding to build more copies of the prototype
C) building a second prototype that is different from the first
D) making modifications to the prototype that will increase its performance