If a War Interrupted Oil Production,which of the Following Would

Multiple Choice

If a war interrupted oil production,which of the following would most likely happen in the short run?

A) Unit costs would decrease and there would be an upward movement along the aggregate supply curve.
B) Unit costs would increase and the aggregate supply curve would shift upward.
C) Unit costs would increase and the aggregate supply curve would shift downward.
D) Unit costs would decrease and the aggregate supply curve would shift upward.
E) Unit costs would increase and there would be movement along the aggregate supply curve.