In the 1990s, Researchers Attempted to Improve the Balance of Amino

In the 1990s, researchers attempted to improve the balance of amino acids in soybean protein by inserting a gene from Brazil nuts. Why have these transgenic soybeans never been grown commercially?

A) The public was misinformed by food-safety advocates and refused to buy products made from the modified soybeans.
B) The modified soybeans could not grow with the foreign gene present.
C) Some people were allergic to the protein product of the Brazil nut gene.
D) Regulatory hurdles made the modified soybeans too expensive to market profitably.
E) The protein product of the soybean was indigestible to most people.