Graphically,what Is the Effect of Technological Change

Multiple Choice

Graphically,what is the effect of technological change?

A) The long-run average cost curve will shift down,but the short-run curves will not change.
B) Both the long-run and short-run average cost curves will shift down.
C) The long-run average cost curve will shift up,but the short-run curves will not change.
D) Both the long-run and short-run average cost curves will shift up.
E) It will reduce the size of the average firm.