3. (1) A rare coin is displayed under a 6-inch layer of plastic (n = 1.5), and a fish sits motionless 6 inches under the surface of a pool of water (n = 1.33). To an observer, looking down on them from above, which appears closer to the surface? A) The fish B) The coin C) The fish and coin appear to be the same depth below the surface. D) Either the fish or the coin, depending on the distance from which the observation is made.