Trace through the following code and determine where the for…

Trace through the following code and determine where the foreground picture is chromacopied on the background picture. def chromakey1(srcPic,bgPic):     srcW=getWidth(srcPic)     srcH=getHeight(srcPic)     bgW=getWidth(bgPic)     bgH=getHeight(bgPic)     for x in range(srcW):          for y in range(srcH):               srcPix=getPixel(srcPic,x,y)               srcColor=getColor(srcPix)               if distance(srcColor,white)>=100.0:                    bgPix=getPixel(bgPic,(bgW-srcW)+x,(bgH-srcH)+y)                    setColor(bgPix, srcColor)    return bgPic