Use the Following to Answer Questions

Use the following to answer questions:
-If the Bank of Canada uses expansionary monetary policy,there is a _____ effect on _____,but_____.

A) negative short-run;real GDP;prices remain unchanged in the long run
B) positive short-run;real GDP;GDP remains equal to potential GDP in the long run
C) positive long-run;real GDP;GDP remains unchanged at its potential level in the short run
D) positive short-run;the price level;the aggregate price level remains unchanged in the long run