An upward shift in the saving function
a. will cause GDP to rise.
b. will have the same effect on GDP as an upward movement along the saving function.
c. means that, at any given level of income, people want to save less.
d. will cause GDP to fall by an amount equal to the shift divided by the marginal
propensity to save.
e. means that the marginal propensity to save must have fallen.
Product differentiation often gives a producer only a small amount of monopoly power
because
a. there can be little or no substitution between product groups.
b. the monopolistic competitor faces a downward-sloping demand curve.
c. the presence of excess capacity gives the producer some freedom to vary output.
d. the product may be unique, but close substitutes are available.
e. the industry is difficult to define and hence cannot be regulated.