A Graph Shows the Price of a Pound of Cucumbers

A graph shows the price of a pound of cucumbers on the vertical axis and the quantity of new cars sold by Honda on the horizontal axis.The price of a pound of cucumbers remains constant as the quantity of new cars sold increases.The graph of these data is a

A) horizontal line.
B) vertical line.
C) curve with a maximum.
D) positively sloped line.
E) negatively sloped line.