In a cooking competition, the dishes are prepared in the following order: Dish X is prepared before Dish Y, Dish Z is prepared after Dish Y, and Dish W is prepared before Dish Z. What is the correct sequence of dish preparation?

Answer: B. W, X, Y, Z
Dish X is prepared first, followed by Dish Y, then Dish W before Dish Z, leading to W, X, Y, Z.