Which of the following is an example of reverse causality bias?

(a) Fans from around the world come to see a sport game, and their expenditure on restaurants will allow restaurant owners to pay their workers more, which the workers will buy more goods.

(b) Men are better at coaching women, and women are better at coaching men.

(c) Higher price leads to higher revenue, but higher revenue also leads to higher prices.

(d) Media is not covering women in sports, because it doesn't attract viewers much, and women in sports don't attract many viewers because the media is not covering much.