Just a Teaspoon Too Much or Too Little of a Single

Multiple Choice

Just a teaspoon too much or too little of a single ingredient can turn a great cake into a mediocre cake. The ability to know just how much to add,how long to stir,and how the cake should smell when cooked is a skill that a long-time baker would have. Which of the following can help others capture this specialized knowledge?

A) electronic data interchanges  
B) pragmatic portals  
C) data mining  
D) expert systems