A Certain Athlete Loves Donuts

Multiple Choice

A certain athlete loves donuts. He receives 100 units of utility for the first donut, an additional 80 for the second, an additional 60 for the third, another 40 for the fourth, and another 20 for the fifth. The marginal utility of the fourth donut is ________ and the total utility from consuming four donuts is ________.

A) 40; 40
B) 40; 280
C) 140; 280
D) 280; 100