When the price for hamburger rises, why do the demand for hamburger buns fall?

Consider the demand for hamburgers. If the price of a substitute good (for example, hot dogs) increases and the price of a complement good (for example, hamburger buns) increases, can you tell for sure what will happen to the demand for hamburger? Why or why not? 

Which of the following will not shift the demand curve for hamburgers?

A. The price of hot dogs.

B. The price of hamburgers.

C. The price of hamburger buns.

D. The income of hamburger consumers.