Economic policies often have effects that their architects did not intend or anticipate

Peanut butter and jelly are complements for many consumers. Consider the market for peanut butter. If there is an increase in the price of jelly,

A) there is a shift in the supply curve for jelly. B) the price of peanut butter rises. C) the quantity of peanut butter increases. D) the demand curve for peanut butter does not shift; instead there is a movement along it. E) there is a movement along the supply curve of peanut butter.

What two events undermined the theory that supply creates its own demand?

What will be an ideal response?