They were given 3 glasses of red wine - A, B and C.
They were told A is the cheapest wine and C is the most expensive wine. B is priced in between A and C.
They have to taste the wines and give their comments after smelling and tasting each wine.
All three of them commented the cheapest wine tasted acidic and not smooth.
The lady said wine B is a little sweeter and the other two guys said it felt smoother.
The lady also finds the most expensive wine C tasted the sweetest among the three glasses.
The other two guys felt wine C the best among all three.
It turned out all three glasses of wine are the same.