Suppose that
• When income is $10,000, consumption spending is $6,500.
• When income is $11,000, consumption spending is $7,250.
The marginal propensity to consume for this economy is
a. 0.800.
b. 0.750.
c. 0.650 or 0.664, depending on whether income is $10,000 or $11,000.
d. 0.650.