Convex side of a plano-convex lens is fully immersed in a liquid, of same refractive index (equal to 8/5) as that of the lens. Which one among the following is correct regarding the image of a point source of light placed in air at 40 cm away from the lens? (Assume the focal length of the plano-convex lens as 20 cm)

 (a) Its image will be formed 40 cm behind the lens

(b) Its image will be formed at 25 cm behind the lens
(c) No image will be formed because of the same refractive index of the lens and the liquid
(d) Its image will be formed 64 cm behind the lens