All of the Following Are USDA Requirements for Certified Organic

Multiple Choice

All of the following are USDA requirements for certified organic crops,dairy,and meat except that_________ .

A) animal manure may be used to fertilize crops
B) all animals raised for slaughter must be fed organic food or graze on land that is managed with organic practices
C) genetically engineered seeds may not be used to produce organic crops
D) vaccines may not be used on animals raised for slaughter