Racing gears for an auto transmission Options

[mrgrape]

k so i realize when ur racing u still h ave these options
2 and L and O/D off
basically i told my friend who drives a gti to take my car for a spin
and he put the gear in L then 2 then D
and i was like holy **** the torque!!!!!
same with O/D off i think i was going faster
so lets say ur at a drag race
what is the best way to race using all these gears

[Hanyo]

put the gear in D and keep your foot on the floor.

shifting like that does nothing for your car!