An observer looks from the outside of a spherical aquarium at a fish that swims in the water of the aquarium. The thin glass wall has the same thickness everywhere and has a curvature of 25 cm. Where does the observer see the fish when it swims on the line connecting the observer and the center of the bowl at a distance of 24 cm from the nearest wall to the observer? T he relative refractive index of the water to the air is 1.33. Select the correct answer from the following list:

a) -2.36 dm

b) 15.0 m

c) -.820 dm

d) 20.5 m