Which of the following will not increase the demand for hot dogs (i.e. which will not shift demand to the right)?
a. An expectation of a decline in the price of hotdogs in the future.
b. The price of hotdogs fall.
c. An increase in the price of substitute, such as hamburgers.
d. A decrease in the price of a complement, such as hotdog buns.
e. A celebrity effectively promotes the healthful attributes of hotdogs.