Classifying a Good as Excludable Means

Multiple Choice

Classifying a good as excludable means

A) that someone can be barred from consuming the good based on race, creed, or some other irrelevant characteristic.
B) that anyone who does not pay for the good cannot consume it.
C) that consumption of the good causes no externalities.
D) that a producer with patent or copyright protection can exclude any other producer from selling his product.