A soil-dwelling bacteria called Agrobacterium tumefaciens has the potential to transfer a fragment of its DNA into plant cells. The plant's cellular machinery is effectively taken over by the bacterial DNA when it is integrated into a plant chromosome, where it is then used to promote the bacterial population's growth. This procedure is mostly used to create crops that are resistant to insects or herbicides; such crops are termed:

• A. Genetically modified crops
• B. Genetically engineered crops
• C. Genetically manipulated crops
• D. All of these