The graph shows the price change, in dollars, of a toy for different levels of demand. The x-axis represents quantity (thousand units), and the y-axis represents price.

What does the average rate of change tell you?
Choices:
A:An increase in demand of 500 units will decrease the price of each toy by $\$ 1$
B:An increase in demand of 500 units will increase the price of each toy by $\$ 1$
C:The price of each toy increases by $\$ 0.50$ for each additional 1000 units demanded
D:The price of each toy decreases by $\$ 0.50$ for each additional 1000 units demanded
Please directly answer the question and provide the correct option letter, e.g., A, B, C, D.
Question: The graph shows the price change, in dollars, of a toy for different levels of demand. The x-axis represents quantity (thousand units), and the y-axis represents price.

What does the average rate of change tell you?
Choices:
A:An increase in demand of 500 units will decrease the price of each toy by $\$ 1$
B:An increase in demand of 500 units will increase the price of each toy by $\$ 1$
C:The price of each toy increases by $\$ 0.50$ for each additional 1000 units demanded
D:The price of each toy decreases by $\$ 0.50$ for each additional 1000 units demanded
Please first conduct reasoning, and then answer the question and provide the correct option letter, e.g., A, B, C, D, at the end.
Question: The graph shows the price change, in dollars, of a toy for different levels of demand. The x-axis represents quantity (thousand units), and the y-axis represents price.

What does the average rate of change tell you?
Choices:
A:An increase in demand of 500 units will decrease the price of each toy by $\$ 1$
B:An increase in demand of 500 units will increase the price of each toy by $\$ 1$
C:The price of each toy increases by $\$ 0.50$ for each additional 1000 units demanded
D:The price of each toy decreases by $\$ 0.50$ for each additional 1000 units demanded