A Major Part of the National Environmental Protection Act Was

A major part of the National Environmental Protection Act was the requirement that prior to the start of a major government project there had to be:

A) Probable cause to believe that injury to the environment is serious.
B) An environmental impact study to determine the possible effects on the environment.
C) Some assurance that no one's property rights would be affected.
D) A cost-benefit analysis to make sure the benefits outweigh the cost.
E) None of the above.