The correct option is A you can only see object outside the room but not the objects inside the room
We can see an object if light reflected or emitted by it reaches our eyes. If we are in a dark room, no light will enter into our eyes. Thus, it is not possible for us to see objects in the room. But, objects outside the room may be visible to us. If there is a light present outside the room or an object is emitting its own light, then we can see the objects that are present outside the room.