Suppose that widgets are a normal good and that when income goes up, the quantity
demanded of widgets stayed the same and the price of widgets increased. Which of the
following statements about the widget market could be true?
a. The demand for widgets is unit elastic, and the supply for widgets is perfectly
inelastic
b. The demand and supply for widgets are both perfectly elastic
c. The demand and supply for widgets are both perfectly inelastic
d. The demand for widgets is perfectly inelastic, and the supply for widget is
perfectly elastic
e. None of the above