The short-run aggregate supply curve slopes upward, but the long-run aggregate supply curve is vertical. Option B.
The short-run aggregate supply curve is sloping because supply increases as price rises. In the short run, firms have a constant factor of production. Output and real GDP increase at a given price as the curve shift outward.
The Short Run Aggregate Supply Curve gives us an idea of how all firms in the economy react to price stability. When prices stagnate, the SRAS curve slopes. The SRAS curve shows that the higher the price level, the higher the output. The short-run individual supply curve is the individual marginal cost that is greater than the minimum average variable cost at all points.
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