Explain the relationship between the aggregate expenditures model in graph (A) below and the aggregate demand model in graph (B) below where aggregate demand is shifting. 
Definitions:
Human Chorionic Gonadotropin (hCG)
A hormone produced in pregnancy that is made by the embryo soon after conception.
Crystal Violet
A triarylmethane dye used in microbiology to stain cells, particularly in the Gram staining procedure to identify and classify bacteria.
Primary Dye
A basic colorant used in staining or coloring materials, essential for establishing the base color in various applications.
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