The market for blue jeans is in equilibrium. Blue jeans are a normal good for consumers. If a recession reduces consumers' incomes at the same time that the price of denim (an input in the making of blue jeans) increases, we can say with certainty that as a result:

• the equilibrium price of blue jeans will decrease

• the equilibrium price of blue jeans will increase

• the equilibrium quantity of blue jeans will increase

• the equilibrium quantity of blue jeans will decrease