The vertical portion of the AS curve

A) is a short-run phenomenon.
B) shows national output rising with the price level.
C) does not shift over time,due to economic growth.
D) represents the maximum output level.

AS Curve

Short for Aggregate Supply Curve, it represents the total supply of goods and services that firms in an economy are willing to sell at a given price level.

Maximum Output Level

The highest level of output that a company can produce in a given period without increasing the input.

National Output

The total value of all goods and services produced by a country's economy over a specific time period.