Autonomous determinants of consumption expenditures are dependent on the level of current disposable income

Refer to the above table. The table gives the combinations of real disposable income and real consumption for a college student for a year. What is the value of the marginal propensity to consume?

A) 0.7 B) 1 C) 0.3 D) 0

If a decrease in the price of a good decreases the total revenue, the demand for the good is

a. price elastic b. price inelastic c. income elastic d. income inelastic