This is first related to the height of the sun. On the premise that the shadows are all on the wall, the higher the height, that is, the closer to noon 12, the smaller the height of the shadow will be, and the shadow will be correspondingly elongated in the morning or at night.

Secondly, it is related to the orientation of the house. The more the window faces south or north, the smaller the width of the shadow, and the more it faces east or west, the greater the width.

Also, it is obvious that sunlight is not parallel light here. The actual situation is scattered. Of course, there will be many cases, which may be higher than the actual window, but not so wide, but not so high, or neither so high nor so wide. Of course, if the above two points reach the maximum, the shadow will be bigger than the window prototype. And if the sun shines obliquely from above, it will be a parallelogram, but in either case it still belongs to A, so the answer is A!

Over 100.