Which two advantages of the acoustic systems for pest control are most important to include in a summary of this approach?
A. Scientists who conduct agricultural research have studied these systems.
B. These systems can distinguish between insect noises and other sounds like wind or traffic.
C. Scientists at the Agricultural Research Service are developing new ideas all the time.
D. These systems will reduce the need for chemical pesticides on farms and in food warehouses.
E. These systems were created at an agricultural research center in northern Florida.