What is (are) the main point(s) in Hardin's Tragedy of the Commons?
A. To restrict freedom to procreate is a necessity to preserve other freedoms
B. Technology is the best solution to accommodate growing human population
C. Environmental issues must be analyzed separately from the question of population growth
D. To appeal to people's conscience is the best way to control overpopulation
E. None of the above
F. B and D only