In: Economics
Marginal Propensity to Consume (MPC), is the proportion of an increase in income that gets spent on consumption.
MPC = Change in Consumption / Change in disposable Income
0.6 = Change in Consumption / 20
Change in Consumption = 0.6 * 20 = $12 Billion
This means that consumption spending will initially decrease by $12 billion.
So, Option A is Correct.
With the increase in taxes on household income, the income of household will decrease. As a result the consumption spending by household will also decrease.