The Price Charged for Access to an Uncongested, Excludable Non-

The price charged for access to an uncongested, excludable non- rivalrous good should be _ because _ .

A) positive; more than one person can consume this good at the same time.
B) positive; marginal cost and marginal benefit for this good are both positive.
C) zero; the marginal benefit of the last unit consumed is zero.
D) positive; consumers receive a positive marginal benefit from consuming the good.
E) zero; it is inefficient to exclude people from consuming this good once it has been supplied.