Which of These Statements Regarding the Seller's Price Is Most

Which of these statements regarding the seller's price is most accurate?

A) Internet price changes are regulated by the Internet Fair Practices Act to protect consumers against price gouging.
B) The seller's price is constrained by the type of competitive market within which it competes.
C) Price changes cannot be regulated in a monopoly.
D) The type of market has little or no impact on a firm in a monopolistic competitive environment.
E) Competitive environments should affect a firm's pricing objectives, but not its actual product prices.