Due to marketing's success in business, what do management gurus think about marketing's role in a company?

The correct answer is letter "C": that it's not just a function anymore.

Explanation:

Marketing has proved that it plays a key role in the success of a business. The way a company portraits its products to consumers impacts directly in the sales, then the better the advertisement the higher the revenue. Marketing is not perceived just as a function because of that. Technology and new means of communication have boosted this scenario since most goods and services are provided to consumers through mobile devices.