Peak-load pricing is often referred to as full cost pricing

In the short run, ________

A) cost push shocks can cause firms to raise prices B) workers pushing for higher wages may lead to increases in inflation C) the aggregate supply curve may shift to the left with increases in expected inflation D) all of the above E) none of the above

If an industry's long-run supply curve is negatively-sloped, the industry has

a. increasing costs. b. decreasing costs. c. constant costs. d. impossible to predict.