The diagrams below show the aggregate demand (AD) and short run aggregate supply (SRAS) curves for an economy. AD$_1$ and SRAS$_1$ show the initial positions of the curves and AD$_2$ and SRA$S$_2$ the new positions.
Which one of the following diagrams, A, B, C or D, illustrates a fall in world commodity prices as well as a fall in government spending?
1 )


3 )

4 )

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