Figure 4.6.1 -Refer to Figure 4.6.1 Above. the Demand Curve, D Is

Figure 4.6.1
-Refer to Figure 4.6.1 above. The demand curve, D is:

A) the sum of demand curves d₁, d₂ and d₃.
B) a demand curve that takes into account the changes in price and income.
C) a demand curve that describes the same data used to draw curves d₁, d₂ and d₃.
D) an example of a demand curve that takes into account many determinants of demand.