Sean Has Created an Automatic Cat Feeder That Will Release

Multiple Choice

Sean has created an automatic cat feeder that will release small amounts of wet food at times set by the owner.He hopes that the unit will solve the problem of having to feed the cat multiple times a day or having to throw out food that has gone dry.He builds seven crude but serviceable units and asks friends with cats to test the product.He then attains their feedback.What is this action called?

A) a pilot
B) a prototype
C) a dry run
D) an operational test