The diagram to the right illustrates a very important relationship in economics between two$$ variables: the price of a good and the quantity demanded of that good.

The two variables in this diagram$$ are:

Part $2$

A$.$

price$($bushels per$$ week$)$ on the vertical axis and quantity$($dollars per$$ bushel$)$ on the horizontal axis.

B$.$

price$($dollars per$$ bushel$)$ on the horizontal axis and quantity$($bushels per$$ week$)$ on the vertical axis.

C$.$

price$($dollars per$$ bushel$)$ on the vertical axis and quantity$($bushels per$$ week$)$ on the horizontal axis.

D$.$

none of the above.