Which statement best compares the laws of supply and demand?
A
The two economic laws exist in theory. They have no relation to economics in the real world.B
The two economic laws exist in theory. They work in practice, but real-world factors can have an effect.C
The two economic laws work in practice. They apply to real-world economics eighty percent of the time.D
The two economic laws work in practice. They prove to be true in the real world one hundred percent of the time.