Suppose there is an increase in the price of cereal (the two goods are complements in consumption). Which of the following statements shows the change in the market for milk?
a The demand curve will shift from D1 to D3.
b The demand curve will shift from D1 to D2.
c There will be a change in the quantity demanded from Point a to Point b.
d There will be a change in the quantity demanded from Point b to Point a.