Why is the correct answer yes. Professor Carrell only gains 21 dollars of benefit for the first plate and the price is raised to 25. Wouldn't that mean he is losing 4 dollars?

Question 16 0 / 6 pts The below graph show's Professor Carrell's Total Benefit from eating plates of sushi at Nami's "all you can eat" sushi, which costs $20. Plates of Sushi Total Benefit ($) 21 2 41 59 4 74 5 85 91 91 8 81 If Nami raises the price form $20 to $25. Does professor still go to the buffet? ect Answer Yes Answered No