Figure 21-29 The Figure Below Illustrates the Preferences of a Representative Consumer

Multiple Choice

Figure 21-29
The figure below illustrates the preferences of a representative consumer, Nathaniel.
-Refer to Figure 21-29. A change in Nathaniel's optimum from point A to point B results from

A) a change in Nathaniel's preferences.
B) an increase in the income Nathaniel receives when he is young.
C) an increase in the interest rate.
D) a decrease in the interest rate.