1. A good is "excludable" if A. it is easy (or relatively costless) to prevent consumption by those who do not pay for the good. B it is difficult (or very costly) to prevent consumption by those who...

1. A good is "excludable" if A. it is easy (or relatively costless) to prevent consumption by those who do not pay for the good. B it is difficult (or very costly) to prevent consumption by those who do not pay for the good. C. consumption by one person does diminish the quantity/quality of consumption by others.