The Person Who Figured Out That It Is Best to Keep

Multiple Choice

The person who figured out that it is best to keep the milk, bread, and eggs at the back of the grocery store and not at the front probably did not profit as much from this idea as the grocery industry as a whole did. This is because

A) the concept didn't work.
B) the concept was highly nonexcludable.
C) that person's idea was not an innovation.
D) the concept was not a commodity.
E) the concept was nonrivalrous.