What Reason Is Believed to Be the Main Cause for Marketing's

What reason is believed to be the main cause for marketing's relatively low status?

A) That marketing is suppressed by other business disciplines
B) That marketing, although good at promoting products, is very poor at promoting the marketing discipline itself
C) That the links between marketing investments and the long-term profitability of the organization have not been well made
D) That marketing status is tarnished by the bad image of sales and public relations disciplines