Assume that you have collected a sample of observations from over 100 households and their consumption and income patterns. Using these observations, you estimate the following regression:
Ci = β0 + β1Yi + ui,
where C is consumption and Y is disposable income. The estimate of β1 will tell you:
a. ΔIncome/ΔConsumption
b. The amount you need to consume to survive
c. Consumption/Income
d. ΔConsumption/ΔIncome