Answer:
The answer is less cookies are demand.
Step-by-step explanation:
The law of demand states that the higher the price of a good and service, the lower the quantity demanded for that goods or services.
The law above applies to normal goods, the goods that their own price elasticity of demand are elastic(greater than 1.0), also substitution effect.
Cookies is a normal good and that was why less of it were demanded and less of milk too will be demanded because they are complementary goods. Complementary goods are consumed together as a pair.