If the tax multiplier is minus1.5 and a $200 billion tax increase is implemented, what is the change in gdp, holding all else constant? (you may assume the price level stays constant.) a. a $300 billion increase in gdp b. a $300 billion decrease in gdp c. a $133.33 billion decrease in gdp d. a $30 billion increase in gdp e. a $133.33 billion increase in gdp