On a Hot Summer Day, a Construction Worker Enters a McDonald's

On a hot summer day, a construction worker enters a McDonald's fast-food restaurant. He orders the first Big Mac. He consumes it within 3 minutes. He then orders a second Big Mac and consumes it in 10 minutes. He eats only half of the third one in 18 minutes and throws away the rest. The store manager offers him the fourth for free. The construction worker says: "No thanks." For the construction worker described above, we can say that

A) diminishing marginal utility set in only after he had consumed the second Big Mac.
B) diminishing marginal utility began as soon as he had eaten the first Big Mac.
C) diminishing marginal utility did not occur, he simply wanted to quit eating.
D) the law of diminishing marginal utility only applies to durable goods.