what will you do. which does what, what does which
will you push the button
what do the do? why do they do? do they do?
will you turn the knob
are they good? are they bad? are they anything at all
will you flick the switch

which will you click? which will you change? will you do anything at all? does they do anything good or bad. where do they work.

which will you choose its all up to you.
-only one action can be chosen by you
-the only sure thing that each one does is deactivate the other two

what im saying is you can only choose one of the three there is no and you cannot pick More Than one
what i mean by ther is no and

is that there is no "and" in this situation
you only have the choice of "OR"

this or this or this

choose one and only one