Which of the following strategies is illegal in the United States and many other countries?

A bait and switch advertising

B penetration pricing

C price fixing

D price skimming

I think the correct answer from the choices listed above is option B. It is penetration pricing that is illegal in the United States and many other countries. It is a pricing strategy where the price of a product is initially set low to rapidly reach a wide fraction of the market and initiate word of mouth.