Correct Option: D

Tejas is an indigenously-built Light Combat Aircraft (LCA) of the Indian Air Force. It s a single-seat, single-jet engine, multi-role light fighter developed by Hindustan Aeronautics Limited. It came from the Light Combat Aircraft (LCA) programme, which began in the 1980s to replace India’s ageing MiG-21 fighters. Later, the LCA was officially named “Tejas.”