Ronen, a Chef Working for a Prestigious Restaurant, Has Come

Ronen, a chef working for a prestigious restaurant, has come up with an idea for a new dish.The owner of the restaurant, Jean, is impressed with the new recipe and asks all the other chefs of the restaurant to practice making the new dish for three months until they can reproduce the recipe with the exact taste the owner is looking for.The chefs also test the dish on other restaurant staff before introducing it to customers.The source of idea generation used by Jean is:

A) brainstorming.
B) internal research and development.
C) customer research.
D) licensing.
E) reverse engineering and development.