Which of the Following Is Not an Example of the Implementation

Which of the following is not an example of the implementation of the marketing concept?

A) Jimmy Dean's Sausage introduces turkey sausage patties for a healthier alternative to pork.
B) Ford asks customers to vote online for a new color for next year's Ford Focus.
C) McDonald's reduces the labor costs to produce its sausage-egg biscuits.
D) Linxoffers rewards for users who can find flaws in its new software.
E) Volkswagen introduces pop-up rollover bars in its convertibles to protect its consumers in the event of a serious collision.