"When the news of Wednesday's numbers on GDP was made public, stocks and

bonds immediately rose and the U.S. dollar strengthened. Then, when analysis of

the numbers came in, the markets went into reverse. The reason was that the

greater part of the improvement in the quarter--$33.7 billion out of a total GDP

advance of $39.2 billion--came from additions to business inventories." Markets

went into reverse upon learning about the additions to inventories because it

suggested that:

a) output had risen, raising inflation fears

b) output had fallen, raising unemployment fears

c) aggregate demand had risen, raising inflation fears

d) aggregate demand had fallen, raising unemployment fears

Question: why increase in business inventories decrease AD.