23. If real GDP is $20 trillion at an annual rate and the GDP deflator is at 100.0, then current dollar GDP is closest to: (a) $20.0 trillion; (b) $2,000 trillion; (c) $2.0 trillion; (d) $5 trillion 24. In order to shift a long-term aggregate supply curve to the right: (a) inflation must diminish; (b) the growth rate of productivity must fall; (c) a determinant of aggregate supply, like the quality of the capital stock, must improve; (d) immigration must be cut off