There are two boxes that contain red and yellow balls, and you have to blind draw one ball from each urn. If both balls are of the same color you get 100; otherwise, you get nothing. Which of the following two options would you prefer?

A: Both urns have 50% yellowballs and 50% red balls.

B: Both urns have 25% yellowballs and 75% red balls.

Please share the answer with explanation