Read the following context and choose the best option to answer the question.
Context: I have one that grows up from under the deck then comes out the side and acts like a privacy screen between us and out neighbors . I LOVE this tree . I remember when we bought the house ( 9 years ago ) , it was more like a small shrub , poking out from beside the deck ( you could see where the trunk was growing out of the ground under the deck ) . I made my dh leave it alone , as I really thought it was cute .
Question: Why did the narrator put a screen up at their property ?
Options: 
- They want to get cool air .
 - They want protection from tree pollen .
 - They want to be able to smell the shrubs .
 - None of the above choices .


None of the above choices .