Question

4. The price of bicycle helmets rises. As a result, in the bicycle market: A) P and Q* both rise B)P and Q* both fall C)P rises and Q* falls D) P falls and Qrises E) P rises, but we do not know exactly what happens to Q F) P falls, but we do not know exactly what happens to Q G) Q' rises, but we do not know exactly what happens to P H) Qfalls, but we do not know exactly what happens to P I) either P and Q' both rise, or P and Q* both fall, or neither changes J) either Prises and Q falls, or p falls and Qrises, or neither changes