On an optical bench a point object is placed at the mark of 10 cm, a convex lens of focal length 15 cm, at the mark of 40 cm and a concave lens of focal length 15 cm placed at the mark of 60 cm. The final image formed at the mark of (point object and two lenses are coaxial )

Options

A. 30 cm
B. 80 cm
C. 90 cm
D. Infinity