Why does the algorithm always output D?

Question

Python

This code compares screenshots from the game.
The whole point is that the game has a simulator in which you need to press the keys that are highlighted in red on the plate.
When comparing, the code always produces "D".
Why?

from PIL import ImageGrab
from PIL import Image, ImageChops
import time

rage=True

while rage:
    time.sleep(5)
    box1=(1049,884,1253,1016)
    ImageGrab.grab(box1).save('box1.png') 
    image_1=Image.open('box1.png')
    image_2=Image.open('q.png')
    image_3=Image.open('w.png')
    image_4=Image.open('e.png')
    image_5=Image.open('a.png')
    image_6=Image.open('s.png')
    
    result=ImageChops.difference(image_1, image_2).getbbox()

    if result==None:
        print("Q")
    else:
        result=ImageChops.difference(image_1, image_3).getbbox()
        if result==None:
            print("W")
        else:
            result=ImageChops.difference(image_1, image_4).getbbox()
            if result==None:
                print("E")
            else:
                result=ImageChops.difference(image_1, image_5).getbbox()
                if result==None:
                    print("A")
                else:
                    result=ImageChops.difference(image_1, image_6).getbbox()
                    if result==None:
                        print("S")
                    else:
                        print("D")

Answer 1

apparently because result never evaluates to None