An object is placed at a distance of 10 cm to left on axis of a convex lens A of focal length 20 cm.Another convex lens of focal length 10 cm is placed co-axially to the right of the lens A at a distance of 5 cm from A. Find the magnification of final image

Question

$(a)\;1.5 \\ (b)\;1.33 \\ (c)\;2 \\ (d)\;1$