The Diagram Below Shows the Market for Apartments in a City

Multiple Choice

The diagram below shows the market for apartments in a city. Assume that all apartments are identical. FIGURE 5- 4
-Refer to Figure 5- 4. The difference between supply curve S1 and supply curve S2 in this market for apartments is that

A) S1 is not affected by a government controlled rental price.
B) S2 is not affected by a government controlled rental price.
C) S1 is a short- run supply curve and S2 is a long- run supply curve.
D) S1 is a long- run supply curve and S2 is a short- run supply curve.
E) S1 is more elastic than S2.