Which statement is the most accurate? ( LO3 )

a) Your utility schedule for chewing gum can never change, since it is based on your demand schedule for chewing gum.

b) Interpersonal utility comparisons cannot be made unless people buy that good at the same price.

c) Everyone gets the same utility from taking a biology course.

d) A good or service does not have any inherent utility, so we cannot say that a day at a beauty spa is worth $250.