Use the Following to Answer Questions

Multiple Choice

Use the following to answer questions:
Figure: Price and Quantity 2
-(Figure: Price and Quantity 2) At a cost of $20 per unit in the diagram, the demanders whose wants are satisfied are represented by the section of the demand curve between a price of:

A) $100 and $80.
B) $100 and $50.
C) $0 and $100.
D) $20 and $80.