A Major Reason for Poorly Conceived Product Getting into the Marketplace

A major reason for poorly conceived product getting into the marketplace and ultimately failing is marketing managers

A) are under too much pressure from top management and release products without the network of services to support the physical product.
B) are kept out-of-the loop when it comes to the day-to-day operations of their departments.
C) there is too much competition amongst managers from different divisions, so whoever gets to market first supposedly "wins."
D) have too much authority and too little knowledge.
E) have more than adequate formal educations (MBAs) but too little real world experience.