Figure 5-11 -Refer to Figure 5-11.When Price Falls from $50 to $40,it

Multiple Choice

Figure 5-11
-Refer to Figure 5-11.When price falls from $50 to $40,it can be inferred that demand between those two prices is

A) inelastic,since total revenue decreases from $8,000 to $5,000.
B) inelastic,since total revenue increases from $5,000 to $8,000.
C) elastic,since total revenue increases from $5,000 to $8,000.
D) unit elastic,since total revenue does not change.