Which of the Following Would Be an Example of the "Conjunction

Multiple Choice

Which of the following would be an example of the "conjunction fallacy"?

A) Stating that the set of 7 letter words ending in "ING" is larger than the set of 7 letter words with "N" as the 6th letter.
B) Slowing down well below the speed limit when driving at the sight of police car.
C) Contributions to retirement saving account increase when a company moves from an opt-in to an opt-out savings plan.
D) Asking for a higher selling price for a good one already possesses compared to the price one is willing to pay for buying the same exact good.