Given the task definition and input, reply with output. In this task, you are given a context and four options. Each option is a suggested ending for the context. You should read the context and pick the best ending for the context. Please answer with "A", "B", "C", and "D".

[header] How to control aphids [title] Spray the plants with a strong stream of water. [step] Use a hose to spray the plants affected by aphids with cold water-this should knock the aphids right off. A hard rainstorm can also wash the aphids off of the plant. <sep> (A) [substeps] If the aphids just started to attack the plants you live in, walk to the nearest home improvement store and ask if they use sprinklers. Try to spray the plant once a day. (B) [title] Observe where the aphids have found their way into your home. [step] Aphids are small and dark in colour. (C) Be careful and close your plastic sprinklers as water may not wash them off easily. [title] Cut off, or nip, aphids. (D) [substeps] While you want there to be water pressure, make sure you don't damage the plants by setting the pressure too high. Repeat as needed to remove aphids when they crop up.
D