Although Some Tastes Do Change Over Time,economists Believe That Tastes

Multiple Choice

Although some tastes do change over time,economists believe that tastes are relatively stable.If tastes were not stable enough,then _____

A) the supply curve of a good could not be drawn.
B) the "other-things-constant" assumption required for demand analysis could not be made.
C) the average cost curve of a firm could not be drawn.
D) consumers could not increase utility by reallocating their budget.
E) the law of diminishing marginal utility would not hold true.