A point object is placed 30 cm in front of an equiconvex lens of radius of curvature 15 cm and made of glass of refractive index `(3)/(2)`. On placing a convex mirror of radius of curvature 15 cm behind the lens on image side, the final image is found to coincide with the object. The possible distance between convex lens and convex mirror is
A. 15 cm
B. 30 cm
C. 7.5 cm
D. 45 cm
