Unformatted text preview: t the College Board on the Web: www.collegeboard.com. AP® MACROECONOMICS
2009 SCORING COMMENTARY (Form B)
The student earned all 9 points for this question.
The student earned both points in part (a). The student earned 1 point in part (b) for concluding that
aggregate demand shifts to the right but lost 1 point because the explanation is insufficient. The other
points in part (b) were earned. The student lost both points in part (c)(i) for stating that the SRAS becomes
vertical in the long run, rather than shifting to the right, and fo...
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