Why not

intSelected = -1 - Option1(0).Value - Option1(1).Value * 2 - Option1(2).Value * 3

Then:

intSelected = -1 means no option has yet been selected (or all of them have been reset to 0 by code, something I've occasionally found useful)

intSelected = 1, 2 or 3 -> option1(0), option1(1) or option1(2) has been selected.