In Which of the Following Cases Does the Tragedy of the Commons

Multiple Choice

In which of the following cases does the tragedy of the commons occur?
i.cattle grazing on private ranches
ii.catching lobsters off the coast of Florida
iii.raising salmon on salmon farms
iv.using legal services provided by the courts

A) i only
B) ii only
C) ii and iii
D) i and iv
E) i and iii