Citrus Tristeza Virus (CTV) Damages and Kills Susceptible Citrus Trees

Citrus tristeza virus (CTV) damages and kills susceptible citrus trees around the world. It can be spread by grafting of infected plants, and by aphids, insects with piercing mouthparts that they use to suck fluid from plants. Which of the following would be ineffective in controlling the spread of CTV?

A) use of insecticides to control the aphids
B) destruction of infected plants
C) production of transgenic citrus lines using genes from resistant plants
D) quarantine of fields with infected plants
E) application of antibiotic drugs to citrus plants