Use the Figure Below to Answer the Following Question

Use the figure below to answer the following question.

Figure 1A.4.4
-Consider the following information on cola sales by number of cases for a typical university residence floor:
Cola sales and cola prices are

A) inversely related.
B) positively related.
C) not affected by the temperature.
D) unrelated.
E) negatively related at low temperatures, but positively related at high temperatures.