Growing Geraniums as Perennials?

If you live where the temps get below freezing in the winter, you can bring them inside and do either of these:
(1) Bring the pot inside and put in a window with good light and continue to water them and they will bloom all winter; you can cut them back to 4" but I don't.
(2) You can cut them down to about 3-4" and leave them in a pot and put the pot inside where it is above freezing, do not water. they sort of dry out but will revive when it gets warm and will start to leaf out and then you start watering them.

(3) You can remove them from the soil, cut them to about 4" and put them in a paper bag and store in above freezing temps until spring when they will start to leaf out, and you then repot them and continue to care for them as usual.