Use the Figure Below to Answer the Following Question(s)

Multiple Choice

Use the figure below to answer the following question(s) .
Figure 3-13

Refer to Figure 3-13. The market for margarine was initially in equilibrium at point e. Other things constant, a decrease in the price of butter, a close substitute for margarine, would likely move the equilibrium in this market toward point

A) r.
B) s.
C) t.
D) u.