A cylinder of length $$l > 1$$ m filled with water ($$\mu = \frac{4}{3}$$) up to the brim, kept on a horizontal table, is covered at its top by an equiconvex glass ($$\mu = 1.5$$) lens of focal length 25 cm when in air. At mid day, 12.00 noon, Sun is just overhead and light rays come parallel to the principal axis of the lens. The sun rays will be focused

A

25 cm behind the lens in the water

B

37.5 cm behind the lens in the water

C

50 cm behind the lens in the water

D

100 cm behind the lens in the water