If the price level kept increasing, the short-run aggregate supply (SR

If the price level kept increasing, the short-run aggregate supply (SRAS) curve would get steeper because

A) all the unemployed would eventually be hired.
B) the long-run aggregate supply curve is horizontal.
C) there are limits to how long workers can work long hours and capital can go without proper maintenance.
D) the rate at which capacity can be expanded increases indefinitely.

ANSWER

C