One Reason Many People Make Their Own Hollandaise Sauce Rather

One reason many people make their own Hollandaise sauce rather than buy it is that

A) they can maintain control over the quality during production
B) the total cost of ingredients is the same as the price of store-bought sauce
C) firms do not make high-quality Hollandaise sauce
D) people place a high value on their time
E) firms do not produce goods that can be made at home