National Defense Is a ________ Because ________

National defense is a ________ because ________.

A) public good; it can be an overused resource
B) public good; it is nonrival and nonexcludable
C) common resource; no one has the incentive to pay for his or her share
D) private good; no one has an incentive to conserve the good
E) common resource; it suffers from the tragedy of the commons