Since Joining NAFTA in the Early 1990s, Canada Has Experienced

Since joining NAFTA in the early 1990s, Canada has experienced increases in productivity and output in many export- oriented industries because of economies of scale and learning by doing. In these industries, these gains from trade will lead to

A) downward movement (to the right) along the LRAC curve only.
B) downward shifts in the long- run average cost (LRAC) curve.
C) downward shifts in the LRAC and short- run AC curves.
D) downward shifts in the LRAC and movement to the left along the LRAC curve.
E) downward shifts in the LRAC curves and downward movement (to the right) along the LRAC curve.