The Economy's Aggregate Supply (AS)curve Is Assumed to Slope Upward

question 141

Multiple Choice

The economy's aggregate supply (AS) curve is assumed to slope upward because

• A)inputs become more expensive at higher levels of output.
• B)inputs become less expensive at higher levels of output.
• C)firms' unit costs rise as output increases.
• D)firms' unit costs fall as output increases.
• E)aggregate demand increases at higher levels of national income.