You're working with the inventor of a new, easy-to-use Find-All gadget that helps consumers find their gadgets. Whether a cell phone gets lost under the driver's seat in the car or the TV remote control slips down under the cushions of the couch, this new Find-All product will help consumers find their lost gadgets.

Consumers just stick a tiny microchip on the gadgets they want to be able to find, click a button on the Find-All (which looks like a miniature smartphone), and each gadget is registered with its own tiny icon on the Find-All's screen. To locate a lost gadget, the customer touches the icon of that gadget on the Find-All's screen, and an arrow appears, pointing the consumer in the direction to walk or look for the gadget. As the consumer gets closer to the lost gadget, the arrow grows larger in size until it's blinking to indicate the lost gadget is less than one foot away.

The inventor, who is funding this product with his savings, has a working prototype that has been functioning well for months. He wants to move ahead with the product. You're the marketer.

Which of the two actions is most appropriate for the previously described situation?

a) National roll out

b) Gradual introduction