Consider the Simplest Macro Model with Demand-Determined Output

Multiple Choice

Consider the simplest macro model with demand-determined output.Suppose an increase in business confidence leads firms to increase investment in new equipment by $30 million.The marginal propensity to spend in this economy is 0.9.What is the eventual total new expenditure in this economy due to the increase in investment?

A) $3 million
B) $30 million
C) $27 million
D) $270 million
E) $300 million