Dude,
Under carriage down is the new design feature integrated in the Tejas as a standard option package. Just like in a Toyota corolla---you have an L model---then LE---then XLE then and S model---where the base model is L----it is the same way with Tejas---. That was the base model.
If you wanted a model with gear retraction during flight---that is available with a different package and it increase the price---there are many packages available for tejas----.
The really really base model is displayed on a flatbed during a parade. Now if you wanted a flying model---it would cost a lot more and is coming soon on request.
S0---respectable sir----if you really don't know about the doing of Tejas---I would suggest that you may not comment----.
But if my buddy
@GURU DUTT says that it is all wrong----I would say Hail to Guru---he is right as always.