Which of the Following Statements Is the Most Accurate

Which of the following statements is the most accurate?

A) The most dramatic global change affecting marketing efforts of most firms is the rise of the euro as a dominant world currency.
B) While the Internet has had a significant impact on the global reach of marketing,it has had little impact on the competitive environment most firms face.
C) The evolution of the Internet is the most important technological change in the marketing environment particularly the growth of consumer databases,blogs,social networking and the like.
D) Extensive research indicates that economic and competitive trends are the only environmental factors that have a lasting impact on a firm's marketing success.