Bikes and Roller Blades Are Substitutes

question 41

Multiple Choice

Bikes and roller blades are substitutes.Marginal utility theory predicts that when the price of a bike rises,the quantity of bikes demanded

• A)decreases and the demand curve for roller blades shifts rightward.
• B)decreases and the demand curve for roller blades shifts leftward.
• C)decreases and a movement occurs down along the demand curve for roller blades.
• D)increases and the demand curve for roller blades shifts rightward.
• E)increases and the demand curve for roller blades shifts leftward.