Harry loves both hot dogs and hamburgers. He receives about the same satisfaction from eating one hamburger as he does from eating one hot dog, and the two goods fill the same need in Harry's life. The price of hot dogs has been extremely volatile for the past several years, and this year is no exception Hot dog prices decreased tremendously this month Assuming hot dogs and hamburgers are substitutes for Harry, what is the effect on Harry's demand for hamburgers due to the decrease in the price of hot dogs? O A. There will be a movement down along his demand curve O B. There will be a movement up along his demand curve. O C. His demand curve for hamburgers will shift to the left. O D. His demand curve for hamburgers will shift to the right