The demand in a market for smartphones has increased, causing prices to rise. What effect will this likely have on the supply of smartphones?
A. The supply curve will shift up according to the increased demand.
B. Supply will decrease, as always happens when price increases.
C. The supply point will increase by moving along the existing supply
curve, and the entire curve will shift upwards as well.
D. The supply point will increase by moving along the existing supply
curve, the curve itself will not shift.