For each of the following pairs, which of the two goods is more likely to be inelastically demanded and why? Table 5.1 should help:

a. Demand for tangerines vs. demand for fruit

b. Demand for beef next month vs. demand for beef over the next decade

c. Demand for Exxon gasoline at the corner of 7th and Grand vs. demand for gasoline in the entire city

d. Demand for insulin vs. demand for vitamins pg36