Which of the Following Statements About Agricultural Fertilizers Is NOT

Which of the following statements about agricultural fertilizers is NOT true?

A) Global nitrate and phosphate resources are in decline.
B) Large amounts of fertilizers are necessary to maintain high crop yields year after year.
C) Nitrate and phosphate runoff cause eutrophication in different communities.
D) Phosphates are obtained exclusively through mining.
E) If the human production of fixed nitrogen stopped, the amount of fixed nitrogen added to the biosphere each year would only be about half of what it is now.