Some modern farmers use drones and sensors to check exactly which parts of their field need water or medicine. This is called "Precision Agriculture." How does this help the environment?
(A) It saves water and reduces the use of harmful chemicals by only applying them where needed.
(B) It allows the farmer to stay at home and play video games.
(C) Drones scare away all the bees and butterflies.
(D) It makes the vegetables grow in perfect square shapes.