Use the diagram below to answer the following question. Based on this diagram, long-run growth is represented by ___, and short-run expansion is represented by ___.单项选择题

题目图片
A

the part of the wavy line that is above the straight line, the part of the wavy line that is below the straight line

B

the wavy line, the straight line

C

the upward-sloping portion of the wavy line, the down-ward portion of the wavy line

D

the straight line, the upward-sloping portion of the wavy line.

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