Two lenses L1 (10 D) and L2 (12·5 D) are arranged parallel to each other coaxially at a separation of 44 cm, in vertical planes. An object is placed to the left of L1, at a distance of 20 cm from L1, at its principal axis. The distance between the object and its final image formed is
1
66 cm
2
76 cm
3
86 cm
4
96 cm