What pricing objective(s) is a skimming pricing policy most likely implementing? Is the same true for a penetration pricing policy?

What pricing objective(s) is a skimming pricing policy most likely implementing? Is the same true for a penetration pricing policy? Which policy is probably most appropriate for each of the following products: (a) a new type of lawn sprinkling system, (b) a skin patch drug to help smoker quit, (c) a DVD of a best-selling movie, and (d) a new children’s toy?